Les outils des géants

Tools of Titans: The Tactics, Routines, and Habits of Billionaires, Icons, and World-Class Performers (2016) is a self-help book by Timothy Ferriss, an American writer, educational activist, and entrepreneur. He interviewed more than 100 "world class performers" in diverse fields on their advice for success. The book debuted as a #1 New York Times bestseller.Arnold Schwarzenegger wrote the foreword.