The Master Key System

The Master Key System is a personal development book by Charles F. Haanel that was originally published as a 24-week correspondence course. The ideas it describes and explains come mostly from New Thought philosophy. It was one of the main sources of inspiration for Rhonda Byrne's film and book The Secret. The book describes many beliefs such as the law of attraction, creative visualization and man's unity with God, and teaches the importance of truth, harmonious thinking and the ability to concentrate.

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Charles F. Haanel
Charles F. Haanel (1866–1949) used the concepts and methods found in The Master Key System to create a successful business career in St. Louis, Missouri, where he eventually founded one of the largest conglomerates of his time. He wrote several bestselling books focusing on his business technique. Besides The Master Key System, he also wrote Mental Chemistry and The New Psychology. Known as the “father of personal development,” Haanel’s commonsense wisdom has revolutionized conventional thought for almost one hundred years.
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The Master Key System

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