Popsugar Living Books Life Changing Books to Read in Your 20s 40+ Life-Changing Books to Read ASAP December 12, 2019 by Emily Co View On One Page Photo 18 of 42 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 18 The Willpower Instinct Harness the power of self-control with tips from The Willpower Instinct, and train your brain for success. Previous Next Start Slideshow BooksWellnessSelf ImprovementBook Roundup