The New Thought movement emerged in the late nineteenth and early twentieth centuries as a philosophical and spiritual tradition emphasizing the power of thought, belief, and mental discipline in shaping human life. Writers such as Wallace D. Wattles, James Allen, Charles F. Haanel, and Ralph Waldo Trine explored the relationship between consciousness, character, and success, influencing generations of readers and later authors in the field of personal development. Their writings helped establish many of the ideas that would later become widely known through modern works on the Law of Attraction and positive thinking.