Eastern spiritual traditions have long maintained that mindfulness meditation can improve well-being. More recently, mindfulness-based treatment approaches have been successfully utilized to treat anxiety, depressive relapse, eating disorders, psychosis, and borderline personality disorder. This book discusses the conceptual foundation, implementation, and evidence base for the four best-researched mindfulness treatments: mindfulness-based stress reduction (MBSR), mindfulness-based cognitive therapy (MBCT), dialectical behavior therapy (DBT), and acceptance and commitment therapy (ACT). All chapters were written by researchers with extensive clinical experience. Each chapter includes the conceptual rationale for using a mindfulness-based treatment and a review of the relevant evidence base. A detailed case study illustrates how the intervention is implemented in "real life," exploring the clinical and practical issues that may arise and how they can be managed. This book will be of use to clinicians and researchers interested in understanding and implementing mindfulness based treatments.