Based on face-to-face interviews with over twenty self-made billionaires There are thousands of books on millionaire thinking. The knowledge they offer isn't enough to get you to the highest ranks of wealth. The richest people of our times are billionaires. Only one in five million world citizens belongs to this group. Billionaires are extremely rare, and their mindset differs hugely from that of ordinary millionaires. The Billion Dollar Secret offers firsthand knowledge of billionaire entrepreneurs told in their own words. Never before has someone interviewed twenty-plus self-made billionaires across the world for a book project. The author worked for years with some of the very best entrepreneurs on the planet and distilled their secrets into twenty mental principles that enabled them to start from zero and create billions of dollars in value during one life span. This book gives you the road map to follow their path to extreme wealth and success.