How Tim Ferriss keeps from burning out…

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The author of ‘The 4-Hour Workweek’ explains the 4-word daily reminder that makes him more productive

After his 2007 productivity guide “The 4-Hour Workweek” became a bestseller, Tim Ferriss dedicated his career to studying a wide variety of experts at the top of their fields.

His new book, “Tools of Titans,” is a collection of the best lessons he’s learned from over 100 highly successful people.

It wasn’t until last year, however, that he discovered a four-word mantra to profoundly change the way he approached achievement.