Happiness and freedom begin with a clear understanding of one principle: Some things are within our control, and some things are not.
EpictetusFight against yourself, recover yourself to decency, to modesty, to freedom. And, in the first place, condemn your actions; but when you have condemned them, do not despair of yourself. For both ruin and recovery are from within.
EpictetusRemember that you are an actor in a drama of such sort as the Author chooses: if short, then in a short one; if long, then in a long one. If it be His pleasure that you should enact a poor man, or a cripple, or a ruler, or a private citizen, see that you act it well. For this is your business, to act well the given part. But to choose it belongs to Another.
Epictetus