It's been quite a few months since I first came in contact with this book before coming to a realization that I should finally apply the appropriate effort to the methods described in it. Since the first lesson I could already feel a difference in my life. That's the reason why I had the idea of sharing this which is certainly the most significant piece of literature I've ever came in touch with. I hope this book changes the way you understand life and the Universe just like it did to me. I strongly recommend that you visit the following link, where you can find both the book in .pdf and the audiobook in .mp3 formats. This will be more convenient if you want to carry this audio on your mobile devices and will certainly be of great help for your studies. http://www.4shared.com/dir/tJZicjVp/The_Master_Key_System.html " The Master Key System is a personal development book by Charles F. Haanel that was originally published as a correspondence course in 1912. Though originally a 24 week correspondence course, it was published in book form in 1916. It was first published as a book in 1916 by Psychology Publishing, St. Louis and The Master Key Institute, New York. Along with "The Science of Getting Rich", by Wallace D. Wattles, the Master Key System is the source of Rhonda Byrne's inspiration for the book and the film "The Secret" (2006). Charles F. Haanel was an American author, millionaire, entrepreneur, and businessman who belonged to several Masonic societies, the American Scientific League, The Author's League of America, The American Society of Psychical Research, the St. Louis Humane Society, and the St. Louis Chamber of Commerce."