Why do you get angry sometimes when people say you are not good at all? What kind of mentality and psychology is this?

If you say something bad to others, you will get angry. Such people have too much self-esteem and vanity, and you can't see that you have made a little mistake. A slight mistake will make you feel imperfect. This is asking too much of yourself. You must put down such a shelf. When people say you, you will think that I am not perfect, no one is perfect, and I can't do without money. Why am I perfect? Since I'm not perfect, what's the point of saying I'm not good? Who can be good everywhere? If this goes on, you will come to your senses, and when others say you, you may accept it with a clear conscience.