This is a sign of neurasthenia. If you want to improve, you must develop good sleep habits, go to bed regularly, go to bed early and get up early. You can put fruits (apples and bananas) on the bed for a week or two. The fragrant smell of fruit helps to calm the nerve center and help you fall asleep. There is also an indigenous method: mash the onion properly, put it in a bottle and cover it, and put it on a pillow to smell it before going to bed. I usually fall asleep after a while. If it doesn't work again, go to the hospital to see a doctor. Don't take sleeping pills casually. Sleeping pills have great side effects on sleep, so don't rely on them.