Some people like to speak ill of others behind their backs. What is their psychology?

People who speak ill of you may just be jealous of you, or you may have a way they don't like. Now you should learn to get along with people you don't like, and don't get angry because they are not good, because being angry may make you get carried away and make others feel worse. Change yourself, let yourself keep a low profile and talk to others calmly. If someone says something about you, don't speak ill of them, so others will think you are generous. . . . Don't care what others say, they are all unbalanced people. . .