The Master Key System is one of the books that inspired the bestselling DVD and book The Secret . Originally created in 1912 by Charles F. Haanel as a weekly course, it has sold more than 200,000 copies since then. It has also been the motivation behind many enterprising individuals -- CEOs and Silicon Valley entrepreneurs alike -- and has inspired future leaders to attune their thoughts to greatness. The main concept of The Master Key System reveals that everything in the world we seearound us was initiated by the creative energy of thoughts. Thoughts are powerful catalysts in transforming any idea into physical reality. Based on this principle, The Master Key System teaches us how to use the power of thought to realize our dreams. This current version of the book remains true to its original form. Each lesson contains exercises to train and develop your mental skills as well as a summary of all the chapter points. The Master Key System originally was to be read at the slow pace of one chapter per week. So, please take your time, reread each section, and memorize its contents before moving on to the next lesson. Follow these instructions and watch as your thoughts turn into a new exciting reality.