Core principles of ACT
ACT has six core processes essential for building psychological flexibility, which is its foundation (Hayes et al., 2013). Each process works together to help individuals accept their internal experiences, clarify what matters most, and take meaningful action.
Acceptance
Acceptance involves making room for difficult emotions, thoughts, and physical sensations without trying to change or avoid them. Instead of seeing discomfort as something to eliminate, ACT encourages clients to welcome it as a regular part of life. For example, in relationship therapy, acceptance means recognizing and allowing feelings like frustration, fear, or insecurity without letting them dictate behavior.
Cognitive defusion
Cognitive defusion teaches clients to step back and observe their thoughts without becoming entangled. This ACT principle helps reduce the influence of unhelpful thinking patterns that can interfere with value-based actions. Instead of challenging or disputing negative thoughts, clients learn to notice them as mere mental events—temporary and subjective. For example, using a relationship values worksheet, a client might defuse from the thought “I’m unlovable” by identifying it as just a thought—not a fact.
Contact with the present moment
This principle centers on cultivating mindfulness—the practice of focusing attention on the here and now with openness and curiosity. ACT emphasizes that staying present helps individuals fully engage with life, relationships, and values-based actions. This core skill helps clients develop tools to manage difficult emotions without being overwhelmed.
Self as context
“Self as context” refers to observing one’s internal experiences—thoughts, emotions, and sensations—without identifying with them. This perspective fosters an internal sense of stability and self-awareness, allowing clients to recognize that they are more than their fleeting thoughts or feelings. In therapy, this concept is essential for helping individuals avoid becoming fused with negative self-stories (e.g., “I always ruin relationships”). Instead, clients learn to take a step back and observe these experiences from a place of openness and curiosity.
Values clarification
Values clarification is central to ACT and essential for tools like the relationship values worksheet. It involves helping clients identify what truly matters to them—qualities they want to embody and life directions they wish to pursue. This is not about setting specific goals but uncovering deep motivations that give life meaning. For example, someone may value honesty, kindness, or loyalty in their relationships. These values guide the client’s actions, even during conflict or emotional difficulty.
Committed action
Committed action is the process of taking concrete steps that reflect a client’s values, even when doing so feels difficult or uncomfortable. This principle moves therapy from insight to change—translating what matters into what’s done. It’s especially effective when guided by tools like the relationship values worksheet, where clients identify actionable steps aligned with values like respect, love, or trust. Committed action isn’t about perfection but about persistence and flexibility.