Contemporary research on major emotional disorders emphasizes their commonalities rather than their differences. This research continues to lend support for a unified transdiagnostic approach to treatment of these disorders that considers their commonalities and is applicable to a range of emotional problems. Unified Protocol for Transdiagnostic Treatment of Emotional Disorders provides an alternative to disorder-specific treatments of various emotional disorders, designed to be applicable to the wide range of anxiety and other disorders with strong emotional components. The Therapist Guide and accompanying client Workbook present an eight-module therapy program that puts substantial emphasis on emotion-focused approaches, helping clients confront and experience challenging emotions while teaching them how to regulate those emotions. Expanded considerably in this second edition, the volume provides guidance on using the Unified Protocol (UP) to address problems not only with anxiety, but also with depression, eating disorders, non-suicidal self-injury, substance use, and anger. Treatment procedures have been further elucidated and more guidance is provided to practitioners on how to present key treatment concepts. Chapters brand new to this updated edition introduce functional assessment and describe how to provide the UP in a group format, while patient materials have been revised, streamlined, and made more user-friendly.