What should I do if I feel fed up with everybody to the point of anger?

 Widen your Window of Tolerance

You begin that by understanding more about the situations and people that are getting you to that Hyperarousal Zone.

If its friends and acquaintances, by now, you know their ways and exactly how that triggers you. Think before hand of one way to get yourself from the anger to “Window of Tolerance” zone by being more empathetic.