How to vent their emotions? I'm really afraid that one day I can't control myself and choose to kill people.
Don't always think about bad things, go out and talk to your parents more, don't be afraid of the crowd, don't care what others say, if you are really depressed, go to the jumping roller coaster and bungee jumping. After playing these games, you will find that it feels good to lose your center of gravity, as if all the stones in your heart have been put down. If not, you can sit a few times more, climb mountains, sing songs and sing them out loud. Don't resist, and don't feel bad. When you are about to make a mistake, but consciously, think about your parents, the people you love and the people who care about you. Don't think that the world has abandoned you, because you are not the only one who feels this way, but they are all fine and you are no worse than others. You are excellent. Give yourself a little more confidence and you can overcome it. If you say that no one in the world cares about you, then I am willing to be the first person who cares about you. Now that I have answered your question, I don't want you to do anything stupid. You are only 22 years old, and I am the same age. That's great. Don't just choose to fall, speak your mind out loud, you can be better. If we can't help you, you can find someone to enlighten you. I don't think it's okay to see a psychiatrist. My former head teacher was a psychologist. He always enlightened me and made me very happy now. People talk so much to guide you, because they care about you. You are not alone, everyone cares about you. Come on, you're great.