Acceptance and Commitment Therapy is a mindfulness-based form of Cognitive Behavior Therapy. ACT is has been researched extensively and has been found effective for the treatment of a wide range of psychological problems. ACT is based on the philosophy that much of our suffering is the result of an avoidance of painful internal experiences, including painful thoughts or feelings.
Whereas traditional CBT teaches skills to identify and change patterns of thinking that negatively impacting their moods, ACT encourages people to use mindfulness to notice their thoughts and feelings, and not let those thoughts and feelings direct their behavior. Treatment incorporates mindfulness and acceptance to help individuals to identify what they truly value in their lives and then commit to actions inline with value-driven goals.