Authentic happiness is always independent of external conditions. Vigilantly practice polite indifference to that which we can't control. Your happiness can only be found within.
EpictetusWhen you want to hear a philosopher, do not say, 'You say nothing to me'; only show yourself worthy or fit to hear, and then you will see how you will move the speaker.
EpictetusOther people's views and troubles can be contagious. Don't sabotage yourself by unwittingly adopting negative, unproductive attitudes through your associations with others.
EpictetusWhatever you would make habitual, practice it; and if you would not make a thing habitual, do not practice it, but accustom yourself to something else.
EpictetusIt is better to advise than upbraid, for the one corrects the erring; the other only convicts them.
EpictetusIf you want to improve, be content to be thought foolish and stupid with regard to external things. Don't wish to be thought to know anything; and even if you appear to be somebody important to others, distrust yourself. For, it is difficult to both keep your faculty of choice in a state conformable to nature, and at the same time acquire external things. But while you are careful about the one, you must of necessity neglect the other
Epictetus