You could be a slow caffeine metabolizer like I am, which means caffeine could stay in your system for up to 72 hours, so that even if you only drink your coffee in the morning you will have troubel sleeping later that night or even the next day.

Also, dont eat late even if your hungry. Drink tea.

Its easy to get into a pattern of using stimulants because your tired, being awake but never being fully awake enough to work out and exhaust your body physically which is important for sleep. Excercise is a must.

After you sort through your lifestuyle choices, then maybe you could try Gaia Herbs "Sound Sleep" product. Its good stuff, though it makes me feel a little high in the morning, and Im not totally with it for about 2-3 hours after I wake up....Ive slept 10 hours with it before at double the dossage.

%htp in my own opinion works better then Melatonin, and my doctor has said that its fine to take on a daily basis, or if you want to go the next step up the ladder try tryptophan(sp)

yogi brand bedtime tea

best sleep aid ever AND no morning hangover sleepy thing

valerian root works well for me