I'd promised to message a couple of people with any useful stuff from the part of CBT sessions that focussed on sleep patterns - then I figured I may as well pass it on to everyone.
The first thing we covered was that the "8 hours a night" notion is a myth. People differ wildly, and individuals can be anywhere between 4 hours and 10 hours a night in terms of how much sleep they need.
We covered three aspects....environment, behaviour and thinking, which contribute to how well you sleep.
Environment - cooler than usual room temperature, well ventilated, and obviously dark and quiet is generally best. A cold room is better than a hot room because your body temperature drops when you sleep anyway, so getting colder can trick your brain.
Behaviour - try and keep to the same times every day. If you don't sleep "enough" one night, don't lie in cause that just screws up your body clock more. Exercise during the day but not late at night if possible, apparently between 4 and 6 pm is optimum. If you can't sleep, get up and do something relaxing for a while, and if you wake up in the night don't look at a clock. Leave your bedroom as just a bedroom if you can, don't do other stuff like watch TV in there if possible (the handout actually says "keep your bed for sleep and sex" - I wish!!!).
Thinking - try and use mindfulness exercises if you can't sleep from anxiety. If there's any specific anxieties, write them down so there are there to deal with in the morning.
Hope that's useful. I thought I'd at least put a sleepy picture up in case it wasn't