In this book, the author reveals in detail the main issues of the theory and practice of Sufism. The book was written based on my own mystical experience. The author, in an accessible language, initiates the reader into the secrets of mystical knowledge and mystical practices, tells in detail how and under what conditions these practices should be performed. The uniqueness of the book lies in the fact that it was written by a modern mystic and combines both knowledge of the essence of the Sufi tradition and deep knowledge of the inner state of modern seekers. An unbiased reading of the book can be an invaluable aid in the individual work of true seekers.