I always got told to have a hot milky drink before I went to bed. And, you're supposed to try to have it as dark as possible in the room so your sleep cycle isn't interrupted, and you don't wake up in the middle of the night. I can't remember anything else right now.
If it's really getting you down, you should go and see your doctor. They might be able to give you advice on what to do to help you sleep, and if that doesn't help, maybe even some medicine.
And, you're supposed to try to have it as dark as possible in the room so your sleep cycle isn't interrupted, and you don't wake up in the middle of the night.
I can't remember anything else right now.
If it's really getting you down, you should go and see your doctor.
They might be able to give you advice on what to do to help you sleep, and if that doesn't help, maybe even some medicine.
Hope this helps. xD