I developed a consistent bedtime routine, which I think relaxes me some, and after a while your body and your mind might know it is time to go to bed.

As for the Seroquel, when I was on it, I took 150mg a half hour before bed. I also had it at a lower dose as a PRN. It could be a matter of having the dosage adjusted, or it might not be the best match for you. I found it to be an excellent drug for me, but I ended up having to eliminate it due to side effects. I miss it, as it was the first drug that slowed my racing thoughts.

I hope things get easier for you with the sleep.