But at the very root of the thinking, there is a very simple, though not easy, way of living. Take obstacles in your life and turn them into your advantage , control what you can and accept what you can't.

In the words of Epictetus :

Amazingly we still have access to these ideas, despite the fact that many of the greatest Stoics never wrote anything down for publication. Cato definitely didn't. Marcus Aurelius never intended for Meditations to be anything but personal. Seneca's letters were, well, letters and Epictetus' thoughts come to us by way of a note-taking student.