"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. Eisenhower famously said that freedom is really the opportunity to practice...