In life our first job is this, to divide and distinguish things into two categories: externals I cannot control, but the choices I make with regard to them I do control. Where will I find good and bad? In me, in my choices.
EpictetusIf you set your heart upon philosophy, you must straightway prepare yourself to be laughed at and mocked by many who will say Behold a philosopher arisen among us! or How came you by that brow of scorn? But do you cherish no scorn, but hold to those things which seem to you the best, as one set by God in that place. Remember too, that if you abide in those ways, those who first mocked you, the same shall afterwards reverence you; but if you yield to them, you will be laughed at twice as much as before.
EpictetusIf you do not wish to be prone to anger, do not feed the habit; give it nothing which may tend to its increase. At first, keep quiet and count the days when you were not angry: "I used to be angry every day, then every other day: next, every two, then every three days!" and if you succeed in passing thirty days, sacrifice to the gods in thanksgiving.
Epictetus