First, learn to actively divert attention. Don't let yourself be idle when you think too much. Once people are idle, they will think a lot and find something they like to do to divert their attention. You can read books. When you are immersed in books, your thoughts will spread, your thoughts will open, and you won't think too much. Through reading, you can also increase your knowledge and enrich your spiritual world. You can also listen to light music and watch TV, which can also make you forget some troubles and relax.
Second, go to the gym to exercise. When you devote yourself to physical exercise, you have no time to think about things, so you don't think too much. You can go running and exercise in the gym, but you should exercise every day. You should stick to it, not only exercise, but also immerse yourself in sports and become happy.
Third, communicate with friends more. Don't leave yourself at home alone. Being alone at home will be boring and lonely, which will lead you to think too much. So, I want to chat with my friends, share their happiness, and let this relaxed atmosphere make me forget some bad things. Of course, if you have troubles, you can talk to your friends, not only to vent your dissatisfaction, but also to get advice from your friends, without thinking too much.
Fourth, travel. Learn to go out, see the outside world, enjoy different scenery and make friends with different people, so that your brain becomes clear and your mood becomes happy.
Life is full of fun, don't think too much, be confident, learn to face life optimistically and positively, and make life meaningful.