Those with sleep problems...

I've always had sleep problems for years, but I just started this new medication and it is even worse! I'm taking hormones for a hormonal imbalance and I read that one of the side effects is trouble with sleeping.
I can now only sleep like 2-3 hours at a time, 2-3 times during a 24 hour period. I'm so exhausted because my body never gets to reach a deep sleep that sleeping an 8 hour block would give.
Does anybody have any tips on how to fall asleep and stay asleep?