What Is Acceptance and Commitment Therapy (ACT)? How to Use It Effectively

a person holds a yellow flower behind their back

If you’re feeling overwhelmed by anxiety, stress, trauma, or difficult emotions, Acceptance and Commitment Therapy (ACT) can help you respond differently instead of feeling controlled by them. In my practice, I work with adults throughout Brooklyn, NY, using evidence-based approaches like ACT to help them build resilience, develop psychological flexibility, and create meaningful change.

Rather than trying to eliminate uncomfortable thoughts or feelings, I help my clients learn practical skills to accept their experiences while taking actions that align with what matters most to them. In this guide, I’ll explain how ACT works, who it helps, and what you can expect from the therapy process.

Introduction to Acceptance and Commitment Therapy

Acceptance and Commitment Therapy, better known as ACT (usually pronounced “act,” like the word), was designed for people who are tired of wrestling with their own thoughts and emotions. At its heart, ACT teaches that pain is a natural part of being human, but struggling with that pain or trying to eliminate it at all costs just tends to make life smaller. Instead, ACT helps you open up to difficult feelings, take a step back from them, and act in ways that align with your core values.

Unlike older forms of therapy that focused mainly on changing the content of your thoughts, ACT invites you to accept the full range of your experiences, both comfortable and uncomfortable. Then, it gives you real-world tools to move your life in directions that matter, even if you’re feeling anxious, sad, or uncertain in the moment. The “commitment” side of ACT is all about taking action, not just endless reflection.

The development of ACT marked a big shift in psychology. Instead of viewing acceptance as giving up, ACT sees it as making space for what you can’t control, so you can focus on actions that count. For people dealing with long-term struggles, like trauma, substance use, chronic pain, or just feeling stuck, this approach feels refreshingly practical. ACT is grounded in scientific research, and its strategies are meant to help you get out of “struggle mode” and into a life guided by your unique values.

Theoretical Foundations: How ACT Works in Psychology

ACT stands on some pretty sturdy scientific legs, with research supporting its theoretical model, core processes, and clinical outcomes (Hayes et al., 2006). It grew out of what’s called Contextual Behavioral Science, an area of psychology focused on understanding human behavior in the real world and the situations we find ourselves in. One key piece of theory behind ACT is Relational Frame Theory, or RFT. Developed by psychologist Steven C. Hayes and his colleagues in the 1980s, RFT explores how language and thoughts shape our experience, even when those thoughts are inaccurate or unhelpful.

ACT is considered part of the “third wave” of behavioral and cognitive therapies because it focuses on changing how people relate to their thoughts and emotions rather than only changing the content of those thoughts (Hayes, 2016). While traditional cognitive-behavioral therapy (CBT) often focuses on identifying and disputing distorted beliefs, ACT centers on noticing thoughts without getting entangled with them. It emphasizes how our relationship with our inner experiences drives suffering, not just the experiences themselves.

ACT’s foundation in behavioral science allows it to adapt to a huge range of mental health concerns, not only anxiety or depression, but also chronic pain, trauma, and everyday existential struggles. By understanding how language shapes our pain, ACT offers strategies that go deeper than symptom management. This scientific background is also what makes ACT highly customizable: therapists can adjust exercises and metaphors based on your context and needs while staying rooted in proven psychological principles.

How ACT Differs from CBT and Mindfulness Approaches

ACT might look similar to regular cognitive-behavioral therapy (CBT) on the surface, but there are some big differences under the hood. While CBT aims to challenge and “fix” negative thoughts, ACT wants you to notice those thoughts, and then let them float by without getting hooked. The idea isn’t to change what you think, but to change how you relate to what you think.

Mindfulness gets a lot of airtime these days, and ACT does borrow from mindfulness practices, but it’s not just about calming your mind or living in the moment. Instead, ACT uses mindfulness to help you see that thoughts and feelings are like passing weather, not facts that have to run your day. It combines this awareness with committed, values-based action. So while you might meditate in ACT, the endgame is always about what you do next and how you live, not just how you feel during meditation.

Another thing: People sometimes think “acceptance” means giving up. ACT tackles this misconception head-on. Acceptance in ACT is active, it’s choosing not to waste all your energy fighting what you can’t control. Instead of getting stuck on symptom reduction, ACT is designed to build habits that support a meaningful, resilient life, even in the face of pain. This unique blend of mindfulness, acceptance, and committed action makes ACT a practical, flexible approach for a wide range of folks, especially compared to the “change-your-thoughts” focus of traditional CBT or the inward focus of standalone mindfulness apps.

Core Principles of ACT: Six Powerful Processes

The engine under ACT’s hood is a set of six core principles that work together to help you drop the struggle with your mind and start steering your life. These foundational processes are tools anyone can use, regardless of what they’re dealing with day to day. Each one builds on the others, yet they all point to one main goal: psychological flexibility, the ability to stay present, accept what you can’t control, and move with intention toward your own definition of a good life.

Psychological flexibility isn’t just a fancy phrase. It’s the skill set that lets you handle tough thoughts and emotions in a healthier way, rather than being pushed around by them. Instead of chasing happiness or eliminating pain (which, let’s be real, just isn’t possible for anyone), ACT helps you make room for whatever shows up, so you’re free to act in ways that reflect your deepest values. In other words, it’s not about getting rid of discomfort, but about learning how to live well alongside it.

In a moment, we’ll break down exactly what each of these six processes involves and how they come together to make ACT such a powerful tool for real-world challenges. For now, just know these principles create a practical roadmap: first, deal honestly with your inner world; second, figure out what matters to you; and third, take action, even if life throws some tough stuff your way.

Living with Less Struggle: ACT’s Goal of Valued Living

The heart of ACT isn’t just about reducing symptoms or “fixing” what hurts, it’s about moving toward a life filled with purpose and meaning. ACT helps you make choices in line with your personal values, even when old habits of worry, self-criticism, or avoidance try to take the wheel. Instead of fighting every unpleasant thought or emotion, you learn to acknowledge and ride them out while choosing actions that matter.

This shift, from chasing pain relief to chasing what’s meaningful, brings real freedom. When you focus on valued living, internal struggles have less power over you, and healing becomes about growth, not avoidance. That’s how ACT supports genuine change and lasting fulfillment.

a tree that is standing in the grass

Who Can Benefit from ACT? Clinical Uses and Populations

ACT isn’t a one-trick pony, it’s been shown to help a wide range of people facing all sorts of mental and physical health challenges. Whether you’re living with anxiety, depression, trauma, chronic pain, substance use issues, or even just everyday frustration, ACT’s flexible approach has proven effective in clinical studies. Its focus on handling universal human struggles means it’s not locked into fixing only one kind of diagnosis, but can stretch across different conditions and backgrounds.

Another strength of ACT is how well it adapts to diverse life experiences. It’s used not just for people struggling with mood or anxiety disorders, but also for folks navigating physical illness, loss, or big life transitions. Trauma survivors, those with long-standing patterns that don’t budge with other therapies, and many individuals with neurodiverse brains have all found ACT helpful. What unites these groups isn’t a specific “problem,” but the shared human tendency to wrestle with painful thoughts and feelings, and the desire to grow beyond that struggle.

You’ll see ACT used in different settings: individual therapy, group programs (not provided here), digital self-help apps, and more. Its transdiagnostic nature means ACT doesn’t just aim to stamp out symptoms, it’s about building psychological flexibility, which makes a real difference across a spectrum of diagnoses and situations. Up next, we’ll dig deeper into how ACT can be tailored for neurodiverse people and explain the wide-reaching impact this approach offers.

Is ACT Suitable for Neurodiverse Individuals?

Yes, ACT has shown real promise for neurodiverse clients, including those with autism, ADHD, and other neurodevelopmental conditions. Because ACT centers on flexibility and meeting people where they are, therapists can adjust techniques to each client’s strengths, communication style, and sensory needs. This makes ACT a solid choice for honoring unique ways of thinking and experiencing emotions without expecting everyone to fit the same mold.

The focus on values and real-life action in ACT can be especially empowering for neurodiverse folks, who often face stigma or unhelpful pressure to “normalize” feelings and behaviors. ACT helps create a space where acceptance and growth, on your own terms, come first.

Understanding the ACT Therapy Process: What to Expect

When you show up for ACT, you can expect things to feel a bit different from old-school talk therapy. After an initial conversation about what’s bringing you in, your therapist works with you to set clear values and goals for your life, not just what you want less of, but what you want more of. Sessions are highly interactive, with plenty of back-and-forth, exercises, and real-world problem solving. No lectures, no endless focus on what’s “wrong” with you.

Instead of just talking about your problems, ACT therapies draw on practical activities, like mindfulness exercises or exploring new ways to react to tough thoughts. You’ll learn to spot when you’re getting hooked by your mind, and practice stepping back so you can choose your next move more freely. This might feel awkward at first, but it’s meant to help you connect with what matters most when life gets bumpy.

ACT is often provided in weekly or biweekly sessions, with the total number tailored to your needs, sometimes as few as 8 to 20 visits, sometimes a bit more. Whether you’re meeting in person or virtually, therapists may suggest at-home practices or exercises between sessions to boost results. The commitment isn’t about “graduating” from pain, but building skills you can use for the long haul to handle life’s curveballs.

If you’re considering ACT, know that your therapist will focus on personalizing each session. There’s a balance between structure and freedom, letting you guide the journey while still getting support. Honest feedback, humor, and compassion all play a role. You can also find ACT-inspired tools in digital apps and online resources, helpful for folks who want extra practice between their therapy appointments or prefer self-paced learning.

Evidence and Trust: How Research and Experts Support ACT

The science behind ACT is strong and growing stronger each year. Research supports ACT for several mental health concerns, including depression; one systematic review and meta-analysis found that ACT significantly reduced depressive symptoms compared with control conditions (Bai et al., 2020). You’ll find ACT featured in reputable medical institutions, including Cleveland Clinic, where it’s backed as an evidence-based intervention.

Research also suggests that ACT can reduce trauma-related symptoms, with a recent systematic review and meta-analysis finding a moderate, statistically significant improvement immediately after treatment (Rowe-Johnson et al., 2025). Beyond the academic world, ACT’s reputation is built on transparency and adaptation.

Therapists regularly update their approaches based on the latest studies, ensuring clients get care that’s grounded in what actually works, not just theory. This rigor reassures both therapists and clients that investing time in ACT is a smart, trustworthy option for achieving meaningful, sustainable changes. If you have questions about ACT’s safety or effectiveness for your needs, you’re in good company, leading voices in behavioral health have asked the same ones and delivered encouraging answers.

Conclusion

Acceptance and Commitment Therapy offers a fresh, research-backed approach for handling mental health challenges and building a life you actually want. Instead of striving to erase emotional pain, ACT helps you relate differently to your thoughts and feelings, empowering you to live with more freedom, connection, and intention. At Awakenings Counseling, I use ACT principles to support growth across different conditions, life stages, and backgrounds, including neurodiverse individuals and trauma survivors. If you’re ready to take action grounded in your unique values, ACT can offer a path to healing that’s both practical and deeply personal. Facing life’s struggles isn’t easy, but ACT makes it possible to move forward, one meaningful step at a time.

Frequently Asked Questions

What makes ACT different from traditional CBT?

ACT and CBT both fall under the umbrella of cognitive-behavioral therapies, but ACT focuses on accepting thoughts rather than trying to change their content. In ACT, you learn to observe and let go of unhelpful thinking, then move toward actions that reflect your values. CBT is more about disputing and reworking thoughts directly, while ACT emphasizes flexibility and meaningful behavioral change.

Can ACT help with trauma or PTSD?

Yes, ACT has been studied in trauma and PTSD populations, showing strong results for reducing avoidance, increasing emotional tolerance, and restoring a sense of purpose. Its strategies for working with difficult memories and feelings make it a good fit for people managing trauma’s long-term effects, all while focusing on growth, not just symptom relief.

Is ACT useful for managing chronic pain?

Absolutely. ACT is a recommended therapy for chronic pain by many pain specialists and medical organizations. Its focus on acceptance and living well despite discomfort helps people break cycles of avoidance, reduce distress, and improve functioning. ACT doesn’t promise instant pain relief, but it does offer a way to reclaim life from the grip of chronic symptoms.

How long does ACT therapy usually take?

The number of ACT sessions varies depending on your goals and challenges, but many people see benefit within 8 to 20 appointments. Some attend fewer, while others engage in longer-term work if deeper patterns are at play. While ACT is effective short term, ongoing practice and check-ins can reinforce skills and keep progress going strong, even after formal therapy ends.

Can ACT be done virtually or through online tools?

Yes. ACT adapts well to teletherapy and digital mental health platforms. Working with an ACT Therapist in Seattle, WA over video allows you to receive personalized guidance, while ACT-informed apps and self-guided programs can provide additional practice between sessions. These tools can help you practice core ACT skills at your own pace, making effective therapy more accessible, especially for people who live far from clinics or have busy schedules.

References

  • Hayes, S. C., Luoma, J. B., Bond, F. W., Masuda, A., & Lillis, J. (2006). Acceptance and commitment therapy: Model, processes and outcomes. Behaviour Research and Therapy, 44(1), 1–25.
  • Hayes, S. C. (2016). Acceptance and commitment therapy, relational frame theory, and the third wave of behavioral and cognitive therapies—Republished article. Behavior Therapy, 47(6), 869–885.
  • Bai, Z., Luo, S., Zhang, L., Wu, S., & Chi, I. (2020). Acceptance and commitment therapy (ACT) to reduce depression: A systematic review and meta-analysis. Journal of Affective Disorders, 260, 728–737.
  • Rowe-Johnson, M. K., Browning, B., & Scott, B. (2025). Effects of acceptance and commitment therapy on trauma-related symptoms: A systematic review and meta-analysis. Psychological Trauma: Theory, Research, Practice, and Policy, 17(3), 668–675.

About the Author

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Cuyler Simmons

My therapeutic philosophy is not to diagnose, label, or categorize but rather to work with the person right here in front of me now.

I am here to support you as a fellow traveller on life’s journey, not just a therapist-client relationship.

Welcome to Awakenings Counseling

Healing happens when you feel truly seen and understood. As a trauma therapist in Seattle, I create space where your story is honored, your pain is witnessed, and recovery becomes possible. Whether you’re carrying complex PTSD, struggling with relationships, or feeling stuck in survival mode, you don’t have to navigate this alone. Together, we’ll explore what’s beneath the surface with compassion and care.

How Trauma Therapy Works in Seattle, WA

You weren’t meant to carry this weight forever. Trauma therapy in Washington State offers gentle, evidence-based approaches like EMDR, IFS, and somatic work to help you process what happened without being overwhelmed by it. Each session moves at your pace, building safety and connection so real healing can unfold. You’ll learn to respond to life instead of bracing for it.

Hi, I'm Cuyler Simmons

I became a trauma specialist because healing changed my life, and I’ve seen how it can change yours too. My approach blends clinical expertise with genuine human connection … because you need both to feel truly safe. Whether you’re in Seattle, Tacoma, or anywhere in Washington State, I’m here to walk alongside you as you reclaim what trauma tried to take: your voice, your worth, and your trust in yourself.

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