Acceptance and Commitment Therapy or “ACT” is a type of cognitive-behavioral therapy that uses mindfulness and acceptance-based techniques to manage difficult thoughts and emotions while also acting on ones values. ACT was developed by Steven Hayes in the 1980s and has been rigorously studied since that time. There is strong empirical evidence supporting ACT as a treatment for a wide range of disorders including: anxiety disorders, mood disorders, eating disorders, and trauma-related disorders.