The 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.
EpictetusWherever I go it will be well with me, for it was well with me here, not on account of the place, but of my judgments which I shall carry away with me, for no one can deprive me of these; on the contrary, they alone are my property, and cannot be taken away, and to possess them suffices me wherever I am or whatever I do.
Epictetus