If it is because of poor performance in exams, resulting in bad grades, it is because of more psychological pressure, more serious burden of thought, more nervous, more anxious, and may appear insomnia. If the insomnia is caused by psycho-psychological factors, you must adjust your emotions and shift your attention. You can drink milk before going to bed, you can take a warm bath, you can take a walk before going to bed, you can practice yoga or tai chi, etc. to shift your attention. If you can’t fall asleep after 20 minutes of going to bed, get up in time to do other more boring and tedious things until you have the desire to sleep and then go to bed. If insomnia seriously affects your daytime routine or etc., it is recommended to consult a neurologist and give appropriate medication.