Sorry,OP. I couldn't resist. Do you drink lots of tea or coffee? Or have lots of sugar? If so, try and cut down. The best way to be tired and ready for a good night's sleep is to be active enough during the day so that by bed time you are tired. If you lead quite a sedentary lifestyle; i.e, sitting down most of the day, then you are not going to be using up any energy or calories. Make a note for a week of what you eat/drink and at what times of the day or night. Also make a note of how much, if any exercise you do each day. I think it's recommended most of us to have an hour of exercise every day, or at least 5 days a week. Something like that. If you are concerned, speak to your parents or make an appointment to see your GP, who will offer you some good advice. Good luck !!