Depression? How can i stop hating people?

I think you get like that because you lack self confidence. It is hard to accept criticism when you feel insecure. Try not to take everything personal and listen with an open mind. Maybe you need to realize that everybody makes mistakes sometimes and it's better to learn from them than to stew in anger, which is not going to help you grow. Keep in mind that when people say negative things to you, it's usually more about them than it is about you. So take what you need from it and then move on.