Andrew "Drew" Kelly
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.
Jenny Sauer-Klein, cofounder of the acrobatics-yoga hybrid AcroYoga... Читать дальше...