I have heard from many people that taking a magnesium supplement helps a lot with being able to fall asleep.
I tend to stay awake due to sounds a lot, too, and it got to the point where I hadn't had a decent night's sleep in over a month. I started wearing earplugs to bed again (yes, I can still hear my alarm clock and the smoke alarm) and I'm sleeping a lot better. You might want to try it?
“Hope is the thing with feathers, that perches in the soul, and sings the tune without words, and never stops at all.”
- Emily Dickinson