Claude M. Bristol (1891-1951) was an American author and businessman best known for his influential self-help book "The Magic of Believing." Born in 1891, Bristol served as a soldier in World War I, working on the army newspaper Stars and Stripes in France and Germany until 1919. After the war, he embarked on a successful career in investment banking and business, drawing inspiration from his own experiences with the power of belief.

Bristol's journey as an author began with the publication of a small book titled "T.N.T. - It Rocks the Earth" in 1932. However, it was his 1948 bestseller "The Magic of Believing" that cemented his reputation as a pioneer in the field of self-help literature. The book, which has sold over a million copies, was initially written to help ex-service men and women adjust to civilian life and achieve prosperity.

Throughout his career, Bristol explored the intersection of psychology, religion, science, and metaphysics, developing a unique perspective on the power of thought and belief. His work influenced many successful individuals, including entertainers like Liberace and Phyllis Diller, who credited "The Magic of Believing" for their success.

Bristol was also a popular speaker, addressing clubs, business organizations, and salespeople. He passed away in 1951 at the age of 61, leaving behind a legacy that continues to inspire readers seeking personal and professional growth.