Charles Francis Haanel, whose full name is Charles Francis Haanel, was born in 1866 in Michigan and died in 1949 in St. Louis. An American businessman, he made his fortune in industry and management before dedicating himself to writing and spreading methods related to personal success. He became known in the early 20th century with his major work, The Master Key System, published in 1912 as a correspondence course. This text offers a structured method based on concentration, visualization, and mental discipline, aiming to influence reality through directed thought.






















































































































































































































