Christopher Germer, PhD, has a private practice in mindfulness- and compassion-based psychotherapy in Arlington, Massachusetts, and is a part-time Lecturer on Psychiatry at Harvard Medical School/Cambridge Health Alliance. He is a founding faculty member of the Institute for Meditation and Psychotherapy and of the Center for Mindfulness and Compassion. His books include The Mindful Self-Compassion Workbook and The Mindful Path to Self-Compassion (for the general public) and Teaching the Mindful Self-Compassion Program, Wisdom and Compassion in Psychotherapy, and Mindfulness and Psychotherapy, Second Edition (for professionals). Dr. Germer lectures and leads workshops internationally. His website is https://chrisgermer.com. Ronald D. Siegel, PsyD, is Assistant Professor of Psychology, part time, at Harvard Medical School/Cambridge Health Alliance, where he has taught since the early 1980s. He is a longtime student of mindfulness meditation and is a faculty and board member at the Institute for Meditation and Psychotherapy. Dr. Siegel teaches internationally about the application of mindfulness practices in psychotherapy and other fields, and maintains a private practice in Lincoln, Massachusetts. His books include The Mindfulness Solution, for general readers, as well as several acclaimed works for professionals.