The first part reveals the relationship between matter/energy and mind and how one can set in motion the healing power of spirit. It also explains consciousness and matter/energy as vibratory expressions of spirit. This section on the theory of healing includes the chapters: Why Affirmations Work; Life Energy Causes the Cure; Healing Body, Mind and Soul; and, Nature of Creation. It is emphasized that thought needs soul conviction in order to yield the best results.

Part Two is titled Methods Of Practice with the chapters Technique of Affirmation (with two photographs - one demonstrating the posture for affirmation and the other for that of meditation, and Scientific Healing Affirmations, which includes specific affirmations for various physical, mental or spiritual needs. Some of the purposes/conditions for which affirmations are provided include general healing, guidance, wisdom, material success, spiritual success and eyesight, stomach, teeth, purity, curing bad habits, freedom.

There is an index, plus a short biography of the author plus a portrait. This title has been in print for many decades and it's easy to see why - it is a very authoritative but easily understood guide to this ancient practice. Free of esoteric jargon, it explains all aspects of the discipline clearly and comprehensively.

For a very different approach to the subject, I recommend Stuart Wilde's book Affirmations. Reading both Yogananda and Wilde will tell you all you need to know about the power of affirmation and how it can improve your life.