I would say answer levista's stuff on this, and try to relax some .... strange as it seems, but listen to classical, or nature music ..... even stuff like that Braveheart music, anything to RELAX you.
I WOULD NOT advise going down the sleeping tablet/herbal road , popping pills everynight .... its addictive and you'll end up thinking you NEED them to sleep...try alternatives first bud ..... I NEVER EVER sleep proper, I am like a fuckin zombie who sleeps when it can .... but to help me die temp , I listen to stuff like Braveheart, Last Of the Mohicans, Lord of the rings soundtracks ...... I get relaxed and off in nod before long.
goodluck