Acceptance and Commitment Therapy (ACT) and How It Works

Acceptance and Commitment Therapy: What It Is and How It Works

Estimated reading time: 9 minutes

Key takeaways

ACT helps people respond differently to difficult thoughts and feelings so they can take steps toward what matters to them.
The work aims to build psychological flexibility: the ability to stay aware of what’s happening and choose actions that fit your values, rather than being directed solely by distress.
ACT doesn’t promise that uncomfortable feelings or pain will disappear; the emphasis is on responding more flexibly and taking meaningful action.
The evidence depends on the condition being treated, the comparison used, and the quality of the studies.
A qualified mental health professional can help you consider whether ACT fits your needs and how it might fit alongside other care.

Acceptance and commitment therapy (ACT, pronounced like the word “act”) helps people respond differently to difficult thoughts and feelings so they can take steps toward what matters to them. It isn’t about approving of distress, forcing yourself to feel positive, or making every unwanted thought disappear. The focus is on having more choice in how you respond—even when discomfort is still there.

ACT is a form of behavioral psychotherapy. A therapist may use it to help someone notice patterns such as avoiding situations, getting caught up in self-critical thoughts, or putting off meaningful activities. The work aims to build psychological flexibility: the ability to stay aware of what’s happening and choose actions that fit your values, rather than being directed solely by distress.

The six processes behind ACT

ACT is often explained through six connected processes. They’re not a checklist you have to master, and therapy doesn’t necessarily address them in a fixed order. Together, they offer ways to work with thoughts and feelings while making room for purposeful action.

Acceptance

Acceptance means making room for difficult internal experiences—such as anxiety, grief, or physical discomfort—when struggling to suppress or escape them isn’t helping. It doesn’t mean liking those experiences or deciding that nothing can change.

For example, a person who feels anxious before a conversation might notice the anxiety rather than immediately canceling. They can still prepare, set boundaries, or decide the conversation isn’t wise. Acceptance is about changing how they respond to an internal experience, not about tolerating harmful circumstances.

Cognitive defusion

Cognitive defusion means noticing thoughts as thoughts, rather than automatically treating them as facts, commands, or predictions.

If “I’ll embarrass myself” keeps running through someone’s mind, they might try saying, “I’m having the thought that I’ll embarrass myself.” That wording doesn’t prove the prediction wrong. It can simply help the person see that a thought is occurring—and decide whether it needs to guide their next action.

Present-moment awareness

This process involves paying attention to what’s happening now: thoughts, feelings, physical sensations, and surroundings. It isn’t about clearing the mind. The point is to notice what’s present with enough awareness to make a choice, rather than reacting automatically.

Self-as-context

Self-as-context is the perspective from which you can observe changing experiences. A person may have the thought “I’m a failure,” for instance, without treating that thought as a complete description of who they are. This process can create room to see that thoughts and feelings change, while the person noticing them is not reducible to any one experience.

Values clarification

Values are personally meaningful directions for living, such as being caring in relationships, learning, or contributing to a community. They’re different from fixed goals: a goal can be completed, while a value can guide many choices over time.

A therapist may help someone identify values that feel genuinely important to them, rather than values they feel pressured to adopt. Two people facing similar problems may choose different directions.

Committed action

Committed action means taking practical steps that reflect your values, including when those steps bring up discomfort. The action should be realistic and adjustable, not a test of willpower.

For someone who wants closer friendships, a step might be sending one message or attending part of a social event. Success doesn’t have to mean feeling calm or getting a particular response. It can mean following through on an action that matters, then using what happened to decide what to do next.

A brief ACT-style exercise

Here’s one way to apply these ideas to a difficult moment. Treat it as an illustration, not a substitute for therapy or an individualized treatment plan:

Notice: Name what’s happening without judging it: “I’m noticing worry and a tight chest.”
Make room: See whether you can allow the feeling to be present for a moment, rather than immediately trying to push it away. You don’t have to enjoy it or remain in a situation that’s unsafe.
Unhook from a thought: Try, “I’m having the thought that I’ll fail.” This creates distance; it doesn’t establish whether the thought is true.
Identify what matters: Ask what kind of person you want to be in this situation—for example, honest, considerate, or curious.
Choose one manageable action: Take a small step that fits that value, then notice what you learned.

Imagine someone who avoids social situations because they’re afraid of saying something awkward. They might notice the anxious prediction, recognize that connecting with others matters to them, and choose to stay at a gathering for a short time. Anxiety may remain. The aim isn’t to guarantee it will go away; it’s to make a deliberate choice instead of letting anxiety make every decision.

What happens in ACT therapy?

ACT is provided by trained clinicians in individual or group settings. It can also be adapted for online or self-help formats. The specific approach, session count, and exercises vary, so there isn’t one universal schedule or set of steps.

A therapist may help you explore what you’ve been avoiding, how your responses affect your life, and what you’d like to move toward. They may use discussion or experiential exercises to help you practice noticing thoughts and feelings, clarifying values, and choosing actions. These skills are intended to support meaningful behavior, not to serve as a rigid routine you must perform perfectly.

ACT and cognitive behavioral therapy (CBT) are both behavioral approaches, but they may put different emphasis on thoughts. Some CBT approaches focus on examining or changing the content of unhelpful thinking; ACT often focuses on changing how you relate to thoughts and feelings, while acting in line with your values. That’s a broad distinction, not a rule that applies to every therapist or treatment. Research doesn’t establish that ACT is generally superior to CBT or other established therapies.

What does the research say?

The evidence depends on the condition being treated, the comparison used, and the quality of the studies. A review of 18 randomized trials involving 917 participants found that ACT performed better than control conditions on primary and secondary outcomes, but wasn’t significantly better than established active treatments. The review also noted that trials were often small and low quality, limiting confidence in the conclusions. (Review of ACT trials)

An overview of reviews reported generally positive findings for depression and anxiety, while also noting uncertainty about whether ACT outperforms conventional approaches such as CBT and about how results vary by population and delivery method. (Overview of reviews) These findings support considering ACT as one possible therapy, not assuming it will work equally well for every person or condition.

ACT for chronic pain

For chronic pain, the goal is not to promise that pain will disappear. A 2024 meta-analysis of 21 randomized trials reported improvements after ACT in pain interference, functional impairment, acceptance, psychological inflexibility, and depression. Effects on pain intensity, anxiety, and quality of life were smaller. The authors also noted differences among the populations, delivery formats, and intervention lengths, and said longer-term effects require careful interpretation. (2024 meta-analysis)

In practical terms, ACT may help some people focus on functioning and valued activities while living with pain. It should not be taken as a replacement for medical assessment or other appropriate care.

Evidence should not be generalized from one condition to another. For example, a review of ACT for psychotic symptoms found a small, statistically non-significant pooled effect on symptoms across six trials involving 274 people. The trials had a high risk of bias and inadequate safety reporting, and the review concluded that the evidence was insufficient to establish safety and effectiveness for psychotic symptoms. (Review of ACT for psychotic symptoms) This is a reason to avoid blanket claims that ACT is effective or suitable for everyone.

Common misconceptions

“Acceptance means giving up.” In ACT, acceptance concerns how you relate to internal experiences. It doesn’t mean abandoning problem-solving, accepting mistreatment, or deciding that change is impossible.

“The point is to stop feeling anxious or sad.” Relief may happen, but ACT doesn’t promise it. The emphasis is on responding more flexibly and taking meaningful action, even if an uncomfortable feeling stays.

“Values tell me what I’m supposed to do.” Values are personal directions, not rules a therapist imposes. A useful value should help clarify your choices, not become another standard for judging yourself.

“I can use an exercise instead of getting help.” A brief practice may help you reflect, but it isn’t a substitute for assessment or care when symptoms are severe, impair daily life, or raise safety concerns. ACT’s suitability depends on the person and the problem; ask a qualified mental health professional about treatment options.

Is ACT a good fit?

ACT may appeal to you if you want to change how you respond to difficult thoughts and feelings, or if avoiding discomfort is keeping you from activities that matter. It may also be worth discussing if you’re looking for a therapy that connects coping skills with personal values.

A good next step is to ask a prospective therapist how they use ACT, what goals you would work toward, and how they would evaluate whether the approach is helping you. You can also ask how ACT might fit alongside other care you receive. The aim is to find an approach that addresses your needs—not to force yourself into a particular therapy model. This article is educational and isn’t a diagnosis or personalized treatment recommendation.

FAQ

Does acceptance mean giving up?

In ACT, acceptance concerns how you relate to internal experiences. It doesn’t mean abandoning problem-solving, accepting mistreatment, or deciding that change is impossible.

Is the point of ACT to stop feeling anxious or sad?

Relief may happen, but ACT doesn’t promise it. The emphasis is on responding more flexibly and taking meaningful action, even if an uncomfortable feeling stays.

Do values tell me what I’m supposed to do?

Values are personal directions, not rules a therapist imposes. A useful value should help clarify your choices, not become another standard for judging yourself.

Can I use an exercise instead of getting help?

A brief practice may help you reflect, but it isn’t a substitute for assessment or care when symptoms are severe, impair daily life, or raise safety concerns. ACT’s suitability depends on the person and the problem; ask a qualified mental health professional about treatment options.