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 entrepreneur.

[2] For the book, he interviewed more than one hundred "world-class performers" from diverse fields to solicit their advice about how to be successful.

The book debuted as a #1 New York Times bestseller.

[3] Arnold Schwarzenegger wrote the foreword.

[4] Ferriss noticed patterns in the successful people he interviewed, including:[5]