Can't sleep or get comfortable

I cant sleep at night at all. I dont feel tired at all in anyway, but i still yawn and look tired. When i try and get an early night i cant sleep. I recently noticed that once when i was dreaming i awoke and didnt open my eyes as they were already open. So i was day dreaming instead of sleeping. I now try and keep my eyes closed all the time until i fall asleep, but i just end up lying there for hours. I dont drink anything fizzy or anything like that at night, i just have a glass of milk or pure orange juce before brushing my teeth and going to bed.
I have also noticed that i find it hard to feel comfortable at night when trying to get to sleep, i sleep with two pillows in a double bed as i get to hot and squashed in a single. One of the pillows is one of the ones that slowly shapes against your neck like a spondge. I rearange my pillows and move so i lay from straight to diagonally in bed and back again and can never find a comfortable place in the bed to fall a sleep in. I am comfortable eneough to a certain extent,, i could lay there fo hours, but never comfy enough to fall asleep. Even if i do find a comfortable enough place to fall asleep i still dont fall asleep.