DISCIPLINE IS DESTINY The Power Of Self-Control (The Stoic Virtues Series) by Ryan HolidayThe instant New York Times, Wall Street Journal, and USA Today Bestseller! In his New York Times bestselling book Courage is Calling, author Ryan Holiday made the Stoic case for a bold and brave life. In this much anticipated second book of his Stoic Virtue series, Holiday celebrates the awesome power of self discipline and those who have seized it. To master anything, one must first master themselves one s emotions, one s thoughts, one s actions.