Napoleon Hill interviewed over 500 people, including Henry Ford, John D. Rockefeller, Thomas Edison, and three United States presidents. The process of conducting these interviews required an investment of 20 years of Napoleon Hill’s life. Discover: • Why it’s important to write down your goals • The use of autosuggestion to increase your confidence, magnetism, and ability • The best way to use your mind to receive ideasfrom Infinite Intelligence The principles described in this book remain relevant and are applied by today’s leaders and entrepreneurs such as Grant Cardone, Tony Robbins, John Maxwell, Oprah Winfrey and Robin Sharma. The best success book ever written.It helped me become a millionaire.- Brian Tracy Napoleon Hill was one of the most influential American thinkers. His ideas and principles are relevant to this day.