Part Two of a Six Part Series on the Core Principles of ACT Therapy
Changing Your Relationship with Thoughts
This post is the second in our series exploring the core principles of Acceptance and Commitment Therapy (ACT), an evidence-based approach designed to enhance psychological flexibility and promote a values-driven life. Following our discussion of Acceptance, we now turn to another foundational principle of the ACT hexaflex: Cognitive Defusion.

What Is Cognitive Defusion in ACT?
Cognitive defusion is the process of changing how we relate to our thoughts. In ACT, thoughts are not viewed as inherently good or bad, true or false. Instead, the focus is on how much power we give to these thoughts and whether they help us live according to our values. Cognitive defusion involves stepping back from thoughts, seeing them for what they are—simply words or images in our minds—rather than as literal truths that must dictate our actions or emotions.
When we become fused with our thoughts, we treat them as absolute facts and allow them to dominate our decisions and behaviors. Defusion helps us break free from this grip, enabling us to observe our thoughts with curiosity and perspective. By doing so, we can reduce their impact and influence, allowing us to act in alignment with our values rather than being controlled by unhelpful mental content.
Why Is Cognitive Defusion Important?
Cognitive defusion is crucial because it helps us disentangle from thought patterns that contribute to emotional distress and behavioral avoidance. Many psychological struggles, such as anxiety, depression, and low self-esteem, are fueled by unhelpful thinking. When we take our thoughts too seriously or treat them as ultimate truths, we can become stuck in patterns of rumination, worry, or self-criticism.
Defusion allows us to create distance from these thoughts, diminishing their power and influence. It helps us see that thoughts are not commands we must obey or obstacles we must eliminate. Instead, they are transient experiences that we can observe and let pass without getting caught up in their content. This shift empowers us to make choices based on our values rather than being driven by automatic thought patterns.
Cognitive Defusion in Action: A Metaphor
One of the most well-known metaphors for cognitive defusion is the “Passengers on the Bus” metaphor. Imagine you are driving a bus, and the passengers represent your thoughts. Some passengers are loud, critical, or demanding, while others are quiet or supportive. If you stop the bus every time a passenger yells at you, you won’t make much progress toward your destination. Cognitive defusion teaches you to keep driving the bus, acknowledging the passengers’ presence but not letting them dictate your journey.
Practical Strategies to Cultivate Cognitive Defusion
In ACT, cognitive defusion is a skill that can be practiced and developed. Here are some techniques to help you foster this skill:
- Labeling Thoughts: Practice noticing your thoughts and labeling them as they arise. For example, instead of thinking, “I’m a failure,” you might say, “I’m having the thought that I’m a failure.” This simple shift creates distance and reminds you that thoughts are not facts.
- Silly Voices Exercise: Repeat a troubling thought in a silly voice or imagine it being said by a cartoon character. This exercise highlights the arbitrary nature of thoughts and reduces their emotional impact.
- Thought Clouds: Visualize your thoughts as clouds drifting across the sky. Notice them come and go without trying to hold onto or push them away. This imagery reinforces the idea that thoughts are temporary and not inherently powerful.
- Leaves on a Stream: Imagine placing each thought on a leaf and letting it float down a stream. Watch as the leaf drifts away, carrying the thought with it. This technique helps you practice letting go of unhelpful thoughts.
- Thank Your Mind: When your mind produces a particularly challenging thought, try saying, “Thank you, mind,” with a touch of humor or kindness. This response acknowledges the thought’s presence without becoming entangled in it.
Common Misconceptions About Cognitive Defusion
It is important to clarify what cognitive defusion is and what it is not:
- Defusion Is Not Suppression: Defusion does not involve pushing thoughts away or trying to eliminate them. Instead, it involves changing your relationship with them.
- Defusion Is Not Distraction: While defusion techniques may reduce the immediate impact of a thought, their primary goal is to foster awareness and perspective, not to avoid or distract from the thought.
- Defusion Is Not About Truth: The goal is not to determine whether a thought is true or false but to assess whether it is helpful and aligned with your values.
The Role of Cognitive Defusion in the ACT Hexaflex
Cognitive defusion is closely connected to other principles of the ACT hexaflex, such as mindfulness and acceptance. Together, these principles create a flexible approach to managing difficult thoughts and emotions while pursuing a meaningful life. By practicing defusion, you can increase your ability to stay present, act intentionally, and focus on what matters most.
Final Thoughts
Cognitive defusion is a transformative skill that allows us to step back from our thoughts and see them for what they are: fleeting mental events rather than absolute truths. By cultivating this skill, we can reduce the power of unhelpful thinking and make choices that align with our values and goals.
In the next post in this series, we will explore the principle of Present Moment Awareness, which builds on the concepts of acceptance and defusion to help us engage more fully with life. For now, consider how cognitive defusion might apply to your own experiences. How might your life change if you could view your thoughts with greater curiosity and detachment? The journey to greater psychological flexibility starts with small steps like these.
If you live in Washington State, and you would like to make an appointment, please feel free to contact me here. I’m looking forward to hearing from you.
:), Susan Reimers, JD/LICSW
