When he wrote about his career challenges, the perils of fame, and the fleeting pleasures of life, Marcus Aurelius knew what he was talking about. Emperor of Rome, leader of legions of soldiers, and philosopher at heart, Marcus left behind for us his journal, one of the most beloved books in the Western canon. At the heart of Stoicism is this notion – that we control almost none of the circumstances of our lives, but we have absolute autonomy over our reactions to them. Like Buddhism in the east, Stoicism offers clear, down to earth, and straightforward guidance for how to navigate this challenging life.