In this book the author expounds a system of practical methods of the spiritual self-perfection: starting from the entry level up to the highest ones, which lead to the complete spiritual Self-Realization through cognizing God in His Abode and Merging with Him. The book is addressed to those who want to know and to realize the meaning of their lives, to attain the ultimate happiness, to find God, and to immerse in the Embraces of His Love.