Men are disturbed not by things, but by the views which they take of things. Thus death is nothing terrible, else it would have appeared so to Socrates. But the terror consists in our own notion of death, that it is terrible.
When, therefore, we are hindered or disturbed, or grieved, let us never impute it to others, but to ourselves--that is, to our own views. It is the action of an uninstructed person to reproach others for this own misfortunes; of one entering upon instruction, to reproach himself; and one perfectly instructed, to reproach neither others nor himself.
Enchiridion, c. 138 A.D.
Comment: How often have I been irked by some frustration but, upon thinking further, realize it may be a very good thing for the frustrating event to have occurred? How often do I want things to go perfectly for others when, in fact, some people do need a jolt? These realizations occur more and more.