The Author's reason for writing this book is to explain what Spiritual Mastery really entails, and why the vast majority of us find it hard to attain. In particular, physical needs and wants are very difficult to overcome, the main reasons being that they not only create discomfort if not acted upon, but also provide pleasure when met, a double-whammy effect. But this book explains that not all desires have to be given up immediately. Many people will find it difficult to become a Spiritual Master in this lifetime, but a few will succeed, and all progress is good. This book covers all of the key issues in seeking Spiritual Mastery and more, providing information from a variety of sources, including Yogic teachings, Buddhism, Christian Mysticism, Islamic Sufism and Spiritualist Channeling. It explains from the Author's own personal experiences, and advocates of various traditions, what Reality is like, and what to expect in heavenly realms. This allows the reader to choose how far to take spiritual progression in this lifetime, and whether full Mastery is desirable.