Sleep departs again

The mania started because I couldn't sleep, which really sucks because I had awesome sleeping habits at the time. I was actually going to bed by midnight and getting up by 8 am. I was falling right asleep and sleeping all the way through the night without waking up. But now...

It's so hard to fall asleep. I'm lucky if I get to sleep by 3 am. It's usually more like 4 am. I'm up by 7:30 to 8 in the morning. And to top it all off, I keep waking up. So basically I'm getting 3 to 4 hours of sleep a night, not counting all the times in between where I wake up.