It sounds to me like you need to get yourself on a sleep schedual and routine.

Do the same bedtime routine every night at the same time. Brush teeth dress, meds snack ect...

Make your room cool, it will help you sleep

Don't do anything in your bed except sleep (and intercourse if your active) If there is a TV in your room I suggest getting it out.

Try some decalfinated tea with a little milk and sugar (I recommend something like splenda though)

Absolutly no caffiene during the day or night. If I drink caffiene in the morning I am up until the next morning.

Also seroquel screwed me up to. I took 500 mg to get me to sleep but I was in a whole different world the next day. Did not even know my name. The ceiling fan became a huge spider that I was terrified of.