Acceptance and Commitment Therapy (ACT, pronounced like the word "act", not as the initials) is a therapy that aims to help individuals explore who they are, who they want to be and gives them tools to lead a richer, more meaningful life.
The core components of ACT are:
Finding ways to cope effectively with painful thoughts and feelings so that they have less influence on you.
Helping you discover what is most meaningful to you by exploring your values and setting goals to help you behave in ways consistent with those values.
Here is a good website for more information about ACT: actmindfully.com.au/
Harris, R. (2008) The Happiness Trap: How To Stop Struggling And Start Living: A Guide To Act. Boulder, CO. Shambala
Forsyth, J. & Eifert, G. (2016) The Mindfulness And Acceptance Workbook For Anxiety: A Guide To Breaking Free From Anxiety, Phobias and Worry Using Acceptance and Commitment Therapy. Oakland, CA. New Harbinger