Some things to try if you want to sleep soundly and wake up feeling fresh:
Stay away from caffeine and alcohol late in the evening. Try a hot, milky or herbal drink instead.
Make sure your bedroom is cool and uncluttered, and your bed is comfortable.
Take exercise to relieve the day's stresses and strains.
Make lists of things to be tackled the next day before you go to bed, so they're not swimming around in your head.