In acceptance and commitment therapy (ACT), the main goal is to create psychological flexibility. That can be defined as acting in a way that is based on values and in keeping with creating a life worth living, rather than trying to control how inner experiences feel or present in such a way that life is not lived in keeping with one’s values.
In the ACT model, psychological flexibility is broken down into six processes that underpin conceptualizing cases and providing interventions. These can be explored one by one in relation to the case of Charles, to show how they might be used to help with his social anxiety. Such functional assessment within ACT means helping a client to develop a way of thinking about their problems that informs possibilities for positive change.