The essence of philosophy is that a man should so live that his happiness shall depend as little as possible on external things.
EpictetusThe wise realize that some things are within their control, and most things are not. They learn early on to distinguish between what they can and can't regulate.
EpictetusWhenever you are angry, be assured that it is not only a present evil, but that you have increased a habit.
Epictetus