2. Melatonin (natural hormone that causes drowsiness and helps keep you sleeping. Absolutely safe) and Magnesium. Magnesium is a natural "tranquilizer." Calcium helps, so chew a Tum about an hour before bedtime.
3. Wear socks. No kidding. It's amazing.
4. DARK ROOM. Dark. Not just "darkened." DARK. Put foil on the windows. If you can't do that, get a sleep mask.
5. Close doors and windows against noise.
THe socks thing works. I use it. Also, stay away from milk or cocoa or alcohol. Stay away from bright lights too. TV or computer screens screw up your brain’s sleep cycle. No TV or computer for at least an hour before bedtime. That last one is hard to do though.