William Walker Atkinson (December 5, 1862 – November 22, 1932) was a prolific writer, attorney, merchant, and publisher who was instrumental in popularizing the New Thought movement in the early 20th century. His legal education and experience in the business world provided a practical foundation that influenced his spiritual writings and philosophy. Atkinson wrote extensively under several pseudonyms, among them Yogi Ramacharaka and Theron Q. Dumont, contributing to the genre of self-help and personal success literature that was emerging during that time. His work 'Personal Power (The Complete Twelve-Volume Edition)' is a comprehensive exploration of the principles of New Thought, including mental influence, the power of suggestion, psychic healing, and harnessing one's personal willpower. In this seminal work, Atkinson expounds on the belief that individuals possess an inner force that can be tapped into to achieve success, happiness, and personal enlightenment. His literary style combines a pragmatic approach with an esoteric perspective, which resonated with a broad audience, seeking to empower themselves through mental discipline and positive thinking. Atkinson's contribution to New Thought and self-improvement literature continues to be recognized and studied by scholars and enthusiasts of the genre.