Ask yourself: Does this appearance (of events) concern the things that are within my own control or those that are not? If it concerns anything outside your control, train yourself not to worry about it.
EpictetusAnd be silent for the most part, or else make only the most necessary remarks, and express these in few words. But rarely, and when occasion requires you to talk, talk, indeed, but about no ordinary topics. Do not talk about gladiators, or horseraces, or athletes, or things to eat or drink - topics that arise on all occasions; but above all, do not talk about people, either blaming, or praising, or comparing them.
Epictetus