and holistic approach to human behaviour, arguing that human suffering is created by human language (cognition), that is, the way we create and are entangled in our subjective world, and avoid certain unpleasant feelings.

Theoretically, ACT is rooted in B. F. Skinner's philosophy of radical behaviorism and in Hayes' post-Skinnerian functional contextualism. As a therapeutic practice, ACT takes a holistic