Can't sleep at night

Insomnia is a very suffering thing. You know that feel. Since school opened, I could not sleep well at night frequently, but a awful thing is that I got up early. Very afraid once I slept, I would miss several classes. I hypnotized my myself or tried reading books, but it could not work. I did not want to see a doctor and take the medicine. I am supposed to relax once in a while. Maybe the best way to make me sleep is that listening English tapes, just kidding.