What is the physiology of the development of subtle bodies and levels of consciousness of the human soul and Spirit? What are the underlying reasons that determine whether a person will be happy or unhappy in life, whether his body will be healthy or sick? What is the true meaning of human life? Author answers these and other questions based on personal spiritual experience. He had access to “pure consciousness”, and also acquired the ability to internally sense objects and Essences of the subtle worlds. A number of stages of spiritual development were passed through, which usually require many incarnations to complete. This allowed the Author to present a holistic picture of the development and purpose of man, as well as express his idea of ​​parallel worlds, of man and of God. Previously, the book was published under the title “About the Soul and Spirit. Traps and mistakes on the spiritual path.”