"Autobiography of a Yogi" by Paramahansa Yogananda is a spiritual autobiography published in 1946. It chronicles Yogananda's journey from childhood in India through his search for his guru, his establishment of Kriya Yoga meditation teachings, and his travels to America where he lectured and founded the Self-Realization Fellowship. The book introduces Eastern spiritual wisdom and methods of God-realization to Western readers, featuring encounters with saints, scientists, and spiritual figures across two continents. Designated one of the most important spiritual books of the twentieth century, it has sold millions of copies worldwide.