This introduction presents an overview of the key concepts discussed in this book. The book provides an overview of the promising watershed in psychotherapy, including not just a retrospective review of a fast growing field, but also a prospective survey of emerging developments and anticipated breakthroughs. Psychotherapy has evolved as a healing method of reflection and introspective learning, informed by scientific views of human nature, and practiced by mental health professionals in modern medical institutions and clinical contexts. The book focuses on a few resemblances that have fueled the convergence of Buddhist psychology with modern psychotherapy, as well as highlights some of the key contrasts that make these two cultural practices so distinctive. It presents the psychology behind few forms of Buddhist contemplative practice. Groundbreaking clinicians Diana Fosha and Mariana Caplan unpack the transformational power of deep somatic affect states and yogic breath and movement for the embodied healing of trauma and the deepest levels of mind/brain integration.