Signals

For people who sleep well, the bed and bedroom act as a signal to feel sleepy and to fall asleep quickly. For people who have problems sleeping, the bed and bedroom may have become a signal for other activities such as watching TV, lying awake, worrying or feeling frustrated about not sleeping.

Learn to associate the bedroom only with sleep and sex.

Do not use the bedroom for work related tasks or leisure activities such as watching TV.

Being comfortable

You spend a large part of your time in bed. So make sure that your bed is as comfortable as it can be. 

Check that the mattress is OK and that the pillows are right for you.

Make sure that the bedroom is a comfortable temperature, slightly cooler is better than too warm.

Your bedroom should be peaceful, if you cannot get rid of outside noise, consider using earplugs.