To master anything, we must first master ourselves: our emotions, thoughts and actions. Without self-discipline, we risk not only failing to meet our full potential or jeopardising what we have already achieved - we may end up in a lifetime of mediocrity and regret. With discipline, we hold the key to greatness.From elite athletes to heads of state and thought leaders, from Marcus Aurelius to Toni Morrison, Queen Elizabeth II to Martin Luther King Jr, history's greats have all understoodthe power of directing your own habits and setting your limits. In this second volume of the bestselling Stoic Virtues series, Ryan Holiday shows how the most important battle is always with the self.What can you do? Who will you be? Discipline is destiny. Do you have it?