1The contents of this book have been taken from Swami Rama's lecture courses on Yoga Sutras. Swamiji's description of the totality of the mind, the functions of the mind, and the emotions, goes far beyond the concepts of modern psychology, and provides insight into the intricacies of yoga psychology, making this an invaluable edition from the therapeutic viewpoint as well as its practicality as a guide for living a healthy, balanced life.