Think and Grow Rich by Napoleon Hill is a self-help book first published in 1937. Arguably one of the most famous and well-known books on self-improvement, the book has sold over 15 million copies. Inspired by wealthy businessman Andrew Carnegie, Think and Grow Rich was published during the Great Depression and contains the philosophy of rich people and how they made their wealth. A lot of the book comes down to the concept of perseverance and believing in yourself. Hill claimed that this book was the result of more than twenty years of studying the habits of people who had gained wealth – and from that study, he devised sixteen ‘laws’ that need to be applied to achieve success. The book takes those laws, and puts them into fourteen principles that the reader can develop.
Along with basic advice such as treating your customers well, etc, Hill also tells us that we need to grow spiritually as well, and towards the end of the book, he delves into some esoteric subjects such as Kundalini energy, manifesting psychic powers, and tapping into your higher consciousnes. The book, after all, is called Think and Grow Rich.