Charles F. Haanel 
The Master Key System (Barnes & Noble Edition) 

‘We must be before we can do, and we can do only to the extent which we are, and what we are depends upon what we think.’ —Charles F. Haanel

 

Unlock your full potential with
The Master Key System.  You can attain more wealth, more power, more health, and ultimately more happiness simply by following the truths laid out in this short but valuable classic. With the help of “The Father of Personal Development, ” Charles F. Haanel, you can discover the Cosmic Intelligence and become self-empowered.

Sobre o autor

Charles F. Haanel (1866–1949) was born in Ann Arbor, Michigan.  He later moved to St. Louis, where he founded one of the largest corporations in his day.  He describes his surefire methods to personal and financial success in such books as
The Master Key System, Mental Chemistry, and
The New Psychology.