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Lesson one: The Dichotomy of Control. Epictetus once said, 'Some things are up to us, and some things are not.' This sounds simple, yet most of your stress comes from trying to control things you can't. You can’t control the economy, the weather, or what people say behind your back. ​The only thing you own is your own mind and your next action. When you stop worrying about the noise outside, you gain a superpower. Focus 100% of your energy on your own effort. If it’s not in your control, let it