George Mentz
ASIN: B00W0D1OZA
Publisher: Mentzinger Media
Pages: 16

The research and writing of Think and Grow Rich lasted over twenty years. Ultimately, Dr Napoleon Hill sold over thirty-million copies. As for his personal influences, he did write a letter to Charles F. Haanel to say that Haanel's Master Key System had much inspired him and changed his life. Throughout his life, he spent a great deal of time teaching and helping others to learn the laws of success.
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