Whoever then has knowledge of good things, would know how to love them; but how could one who cannot distinguish good things from evil and things ind… - Epictetus

In banquets remember that you entertain two guests, body and soul: and whatever you shall have given to the body you soon eject: but what you shall have given to the soul, you keep always.

if you suppose any of the things not in our own control to be either good or evil, when you are disappointed of what you wish, or incur what you would avoid, you must necessarily find fault with and blame the authors. For every animal is naturally formed to fly and abhor things that appear hurtful, and the causes of them; and to pursue and admire those which appear beneficial, and the causes of them. It is impractical, then, that one who supposes himself to be hurt should be happy about the person who, he thinks, hurts him, just as it is impossible to be happy about the hurt itself. Hence,

Prefer enduring satisfaction to immediate gratification.