In “Cicero on Living a Stoic Life,” John Sellars explains Cicero’s view that there are four dimensions to who you are: common human nature, your own character traits, the circumstances in which you find yourself, and the career you choose. “So, how to live a Stoic life? The top priority remains a life in harmony with Nature/reason/virtue. Then there are the chance circumstances in which we find ourselves, out of our control and ultimately laid down by Nature too. But also central in Cicero’s account is the idea that we remain true to our own individual natures, to who we are. Thus self-knowledge becomes vital for a life in harmony with nature. Once we feel secure that we know who we are, what our strengths and weaknesses are, where we fit in the world, then the only decision to be made is how best to remain true to ourselves in the circumstances in which we find ourselves.” And all of this raises challenging questions about how much is up to you and how much just happens to you.