Hill identifies these principles as the '13 Steps to Riches,' which include developing a positive mental attitude, setting clear and specific goals, developing a plan to achieve those goals, taking action, and maintaining a strong belief in oneself and one's capabilities. The main theme of the book is that anyone can achieve success and wealth by following a certain set of principles. Think and Grow Rich condenses them, providing the reader with 14 principles in the form of a 'Philosophy of Achievement'. Hill studied their habits and drew some 16 'laws' to be applied to achieve success. Think and Grow Rich is based on Hill's earlier work The Law of Success, claims to be the result of more than twenty years of study of many individuals who had amassed personal fortunes. Napoleon and Rosa never repaid Blair for the $300 loan with Rosa taunting Blair about the matter. Napoleon and Rosa divorced in 1940 with Rosa retaining the royalties from Think and Grow Rich as they had been put in her name to protect them any claims on them by Florence and her children. Rosa Lee Beeland contributed substantially to the authoring and editing of Think and Grow Rich. Think and Grow Rich was published in 1937 and became a major commercial success. Before leaving Blair gave his father and Rosa a loan to continue work on their new book, Think and Grow Rich. Following a few months of this living arrangement Blair's wife Vera left due to Napoleon Hill's harassment and abuse with Blair following soon after. Unable to afford a place of their own they moved in with Napoleon and Florence's son Blair in New York City. In 1936 Napoleon met Rosa Lee Beeland when she attended one of his lectures, he proposed the next day and they were soon married. In 1935, Napoleon Hill's second wife Florence filed for and received a divorce. Napoleon Hill holding his book Think and Grow Rich History

The book is considered a classic in the personal development genre and has been widely influential in shaping the way people think about success and wealth. However there is no evidence that the two ever met. He claimed to be inspired by a suggestion from business magnate and later- philanthropist Andrew Carnegie. Think and Grow Rich is a book written by Napoleon Hill and Rosa Lee Beeland released in 1937 and promoted as a personal development and self-improvement book.

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