I've suffered from problems sleeping at some times in my life, and i now feel that i have come up with the best plan for trying to get to sleep. It helps me personally, although if i really can't sleep, much wont help but anyway... i hope this helps anyway.
Firstly, sort your room out. If it is cluttered, clear away the mess, have a good clean and hoover throughout and change the bed sheets. I find if my room is clear, it can sometimes help me to get to sleep. Secondly, open a small window, let some fresh air into your room- works wonders. Make sure your room is at a comfortable temperature, not too hot and not too cold. I'm not too sure of the reasons as to why you aren't sleeping, but if it's due to some sort of personal trauma and you are feeling scared or alone, sleeping with a stuffed animal or something comforting to snuggle up to can help.
Try and set a bedtime routine for yourself and don't vary it much. When i am really struggling with sleeping, my routine involves turning off the computer and TV, having a warm bath and allowing myself to really relax in it whilst having a warm milky drink and then coming back into my bedroom with only a small bedside lamp on and spending 10- 20 minutes lying on top of my bed and the covers listening to some really relaxing music, concentrating on my breathing before turning the music off and entering bed feeling relaxed.
Another thing to remember is to be patient. Try not to get frustrated that you can't sleep, it only makes matters worse. If after an hour you are still really struggling, get up and have another milky drink or try the music again. Anything just to slightly change your mindset might help, but don't put the TV on. I sometimes sleep listening to my Ipod but it doesn't always help, that is something you might want to try and test yourself.
Adjusting to a new sleeping regieme takes time, but if you have no marked improvement after 2 weeks i would suggest contacting a doctor who may prescribe a short period of sleeping tablets or suggest a herbal remedy or offer counselling if he/ she thinks the lack of sleep is due to a deeper problem.
All the best
Lou
xxx