Waking up during the night is a common problem and a type of insomnia. Whether you're a light sleeper or a bad dream wakes you, the video above from psychologist and Night School author Richard Wiseman offers two solutions.
The first is to simply write down any idea or thought that might have awoken you and get back to sleep. The second takes more work: You'll have to get out of bed if you can't fall back asleep within 15 minutes.
Go do something relaxing for 10 minutes -- that doesn't involve the TV or computer but occupies your body and brain (yes, I can't wait for the comments). The idea is to stop associating bed with being awake and perhaps to tire yourself out a little so you can quickly go back to sleep.
Do you wake-up during the night? [YouTube]