Regardless of their specific diagnosis, many people seeking treatment for psychological problems have some form of difficulty in managing emotional experiences. This state-of-the-art volume explores how emotion regulation mechanisms are implicated in the etiology, development, and maintenance of psychopathology. Leading experts present current findings on emotion regulation difficulties that cut across diagnostic boundaries and present psychotherapeutic approaches in which emotion regulation is a primary target of treatment. Building crucial bridges between research and practice, chapters describe cutting-edge assessment and intervention models with broad clinical utility, such as acceptance and commitment therapy, mindfulness-based therapy, and behavioral activation treatment.