This book is a combination of the introduction to the books The Divine Life and Universal Prayers written by Swami Yatiswarananda and serves a guide for spiritual aspirants. Swami Yatiswarananda (1889-1966) is a former vice-president of the Ramakrishna Order and a well-known spiritual personality in the Ramakrishna-Vivekananda Neo-Vedanta movement. This book will help spiritual aspirants understand the various aspects of spiritual life.