Proper training

What, then, is the proper training for this? Firstly, the highest and principal form of training, and one that stands, so to speak, right at the entrance way to the enterprise, is, that when you become attached to something, let it not be as though it were to something that cannot be taken away, but rather, as though it were to something like an earthenware pot or crystal goblet, so that if it happens to be broken, you may remember, what kind of thing it was, and not be distressed.

~ Epictetus