Let man be pleased with whatever has pleased God; let him marvel at himself and his own resources for this very reason, that he cannot be overcome, t… - Epictetus

So you wish to conquer in the Olympic Games, my friend? And I, too... But first mark the conditions and the consequences. You will have to put yourself under discipline; to eat by rule, to avoid cakes and sweetmeats; to take exercise at the appointed hour whether you like it or not, in cold and heat; to abstain from cold drinks and wine at your will. Then, in the conflict itself you are likely enough to dislocate your wrist or twist your ankle, to swallow a great deal of dust, to be severely thrashed, and after all of these things, to be defeated.

It is possible to learn the will of nature from the things in which we do not differ from each other. For example, when someone else's little slave boy breaks his cup we are ready to say, “It's one of those things that just happen.” Certainly, then, when your own cup is broken you should be just the way you were when the other person's was broken. Transfer the same idea to larger matters. Someone else's child is dead, or his wife. There is no one would not say, “It's the lot of a human being.” But when one's own dies, immediately it is, “Alas! Poor me!” But we should have remembered how we feel when we hear of the same thing about others.

Don’t let the force of the impression when first it hits you knock you off your feet; just say to it, ‘Hold on a moment; let me see who you are and what you represent.