What should a person do when he is extremely depressed and unable to talk to others?

Why can't you tell others, or don't want to tell friends and relatives around you? I think you can find a stranger online and talk to him. In this case, you don't have to worry that he will know you and come into your life. This is a good way to get rid of it. Many people like to chat with strangers online. In addition, if you don't like this, the most fundamental solution is to improve slowly from yourself, but it takes a process, and I prefer this one, which is to read more books on self-cultivation and books that teach people not to get lost and depressed easily. In life, when you encounter something that makes you lose or depressed, adopting this negative attitude will actually not help you, so you should open your heart. Just watched Carnegie's "The Weakness of Human Nature", please watch it!