Enchiridion 10

In the case of everything that befalls you, remember to turn to yourself and see what faculty you have to deal with it. If you see a handsome lad or woman, you will find continence the faculty to employ here; if hard labour is laid upon you, you will find endurance; if reviling, you will find patience to bear evil. And if you habituate yourself in this fashion, your external impressions will not run away with you.

Epictetus, Enchiridion 10, translated by W. A. Oldfather

On the occasion of every accident (event) that befals you, remember to turn to yourself and inquire what power you have for turning it to use. If you see a fair man or a fair woman, you will find that the power to resist is temperance (continence). If labour (pain) be presented to you, you will find that it is endurance. If it be abusive words, you will find it to be patience. And if you have been thus formed to the (proper) habit, the appearances will not carry you along with them.

Epictetus, Enchiridion 10, translated by George Long

When anything happens to you, always remember to turn to yourself and ask what faculty you have to deal with it. If you see a beautiful boy or a beautiful woman, you will find continence the faculty to exercise there; if trouble is laid on you, you will find endurance; if ribaldry, you will find patience. And if you train yourself in this habit your impressions will not carry you away.

Epictetus, Enchiridion 10, translated by P. E. Matheson