I suppose I may assume that seven out of ten of those who read these lines are in some kind of difficulty about some other human being. Either at work or at home, either the people who employ you or those whom you employ, either those who share your house or those whose house you share, either your in-laws or parents or children, your wife or your husband, are making life harder for you than it need be even in these days. But sometimes we do. An outside friend asks us why we are looking so glum, and the truth comes out.
People are usually reasonable.
All you've got to do is to make them see things in the right light. Explain it to them in a reasonable, quiet, friendly way. We know how utterly hopeless it is to make X see reason. You know, in fact, that any attempt to talk things over with X will shipwreck on the old, fatal flaw in X's character. But you know better now.