Grounded in cutting-edge scientific research, this book presents innovative ways to explore and work with emotions in psychotherapy. Preeminent clinician-researcher Stefan G. Hofmann accessibly explains how emotions operate, what influences them, and how they can cause distress. He presents strategies that can significantly improve existing evidence-based treatments and promote positive affect and happiness. Clinicians are guided to help clients with any diagnosis gain emotional awareness and use emotion regulation techniques, mindfulness-based practices, and other effective strategies. "In Practice" features highlight specific clinical issues and offer illustrative case vignettes.Table of Contents: Foreword, Steven C. Hayes 1. The Nature of Emotions 2. Individual Differences 3. Motivation and Emotion 4. Self and Self-Regulation 5. Emotion Regulation 6. Appraisal and Reappraisal 7. Positive Affect and Happiness 8. Neurobiology of Emotions Appendix I. Common Self-Report Measures Appendix II. Progressive Muscle Relaxation Appendix III. Expressive Writing