"The 4-Hour Workweek" and "Tools of Titans" author Tim Ferriss talks with Recode's Kara Swisher about his newest book, which compiles the life advice of the "titans" from tech, business and entertainment Ferriss has interviewed on his podcast, "The Tim Ferriss Show." He explains how forays into education, neuroscience, tech entrepreneurship and dietary supplements led him to become a self-help author, and what everyday people can learn from winners like investor Chris Sacca, Uber CEO Travis Kalanick and actor BJ Novak. Ferriss also talks about why "voluntary suffering" is underrated and how ditching social media may make you happier.