"Happiness and freedom begin with a clear understanding of one principle: Some things are within our control, and some things are not. It is only after you have faced up to this fundamental rule and learned to distinguish between what you can and can't control that inner tranquility and outer effectiveness become possible." The Stoic philosopher Epictetus was born on the eastern edges of the Roman Empire in A.D. 55, but The Art of Living is still perfectly suited for any contemporary self-help or recovery program. To prove the point, this modern interpretation by Sharon Lebell casts the teachings in up-to-date language, with phrases like "power broker" and "casual sex" popping up intermittently. But the core is still the same: Epictetus keeps the focus on progress over perfection, on accomplishing what can be accomplished and abandoning unproductive worry over what cannot.