People do things for “their” reasons, not ours. So find their reasons Dale Carnegie
You can make more friends in two months by becoming interested in other people than you can in two years by trying to get other people interested in you.

There is one all-important law of human conduct. If we obey that law, we shall almost never get into trouble. In fact, that law, if obeyed, will bring us countless friends and constant happiness. But the very instant we break the law, we shall get into endless trouble. The law is this: Always make the other person feel important ~ Dale Carnegie
Talk about your own mistakes before criticizing the other person ~ Dale Carnegie