Serial Sleepers

So I don't sleep. I want to sleep. I'm tired as hell most nights when my head hits the pillow. The problem is once my head hits the pillow. Falling asleep is hard. Why is it so hard? Do normal people have issues sleeping? Sometimes I fall asleep just fine. But then I wake up like an hour or so later and can't get back to sleep. It sucks. I'd take drugs to help me sleep but I would like to not be addicted to sleeping pills and honestly I'd like to be able to sleep like a normal person. But I can't. And it sucks.