In a serious reply, cos I suffered badly with it;
Drink shed loads of water through the day, try and avoid caffine. Eat little and often, dont have big meals. Dont watch TV in bed, if you feel like you are just lying there and you cant sleep get back up and go into another room and just do something that wont wake you up fully like watch TV, litterally just chill out or read a mag - i.e. something gentle.