Dialectical Behavior Therapy (DBT) is one of the most significant achievements in contemporary psychotherapy. Originally designed for suicidal and borderline patients, it has now become a general approach for all mental disorders. The training manual has evolved into a comprehensive textbook and practice guide that includes everything needed to conduct effective psychotherapy—alongside disorder-specific interventions. DBT not only treats all personality disorders and traits but also addresses Axis I disorders such as depression, anxiety, obsessive-compulsive disorder, bulimia, anorexia, dissociation, suicidality, addiction, trauma, ADHD, and others. This book contains an unprecedented wealth of brilliant tools for mindfulness, emotion regulation, self-soothing, stress management, communication, crisis intervention, and suicide prevention. The accompanying second volume is a workbook for therapists and patients, featuring a rich collection of therapy materials that are precisely aligned with the DBT Skills Training Manual, allowing individuals to benefit from this treatment concept even without DBT training. In addition to dialectical strategies, entirely new and previously unknown highly effective interventions are included, ensuring both creativity and effectiveness. Even the most challenging, stagnant, and burdensome therapies are no longer at a standstill. With this book, the great master of psychotherapy, Marsha Linehan, guides less experienced and confident psychotherapists through the difficult passages of psychotherapy. However, even seasoned therapists can learn so much from her that it can be said: The DBT manual belongs in every psychotherapeutic practice and clinic.