RYAN HOLIDAY is the bestselling author of The Obstacle Is the Way, Ego Is the Enemy, Growth Hacker Marketing, Perennial Seller, and other books about marketing, culture, and the human condition. His work has been translated into twenty-eight languages and has appeared everywhere from the Columbia Journalism Review to Fast Company. His company, Brass Check, has advised companies such as Google, TASER, and Complex, as well as multiplatinum musicians and some of the biggest authors in the world. He lives in Austin, Texas. Less