- to finding his guru, to becoming a monk and establishing his teachings of Kriya Yoga meditation. The book continues in 1920 when Yogananda accepts an invitation to speak in a religious congress in Boston, Massachusetts, USA. He then travels across America lecturing and establishing his teachings in Los Angeles, California. In 1935, he returns to India for a yearlong visit. When he returns to America, he continues to establish his teachings, including writing this book.

The book is an introduction to the methods of attaining God-realization and to the spiritual wisdom of the East, which had only been available to a few in 1946. The author claims that the writing of the book was prophesied long ago by the nineteenth-century master Lahiri Mahasaya (Paramguru of Yogananda) also known as the Yogiraj and Kashi baba. Before becoming a yogi, Lahiri Mahasaya's actual name was Shyama Charan Lahiri.

It has been in print for seventy years and translated into over fifty languages by Self-Realization Fellowship.[2] It has been highly acclaimed as a spiritual classic including being designated by Philip Zaleski, while he was under the auspices of HarperCollins Publishers, as one of the "100 Most Important Spiritual Books of the 20th Century."[3][4][5] It is included in the book 50 Spiritual Classics: Timeless Wisdom from 50 Great Books of Inner Discovery, Enlightenment and Purpose by Tom Butler-Bowdon.[6] According to Project Gutenberg, the first edition is in public domain and at least five publishers are reprinting it and four post it free for online reading.