Sleepless nights

I have had a lot of sleepless nights here lately. I don't sleep at night and I might be lucky to sleep two to three hours a day. I have a sleep disorder and don't know what to do about it.
I'm not a believer in sleeping pills, so I won't take them. I know that stress is messing my body up something ferce.
All this has made me lose motivation to stay busy like I should. My mind gets so clogged up and nothing comes out.
I don't remember the last time I slept all the way through a night. I did work third shift for awhile, but that has been awhile ago, and now my sleeping pattern is worse than what it was then.