Reading a book makes you feel sleepy? Then go ahead and grab a novel. Think what else might help you wind down and relax. Any daily activity is fine as long as it evokes sleepiness. Call your friend and chat a bit if you know this calms you down. Knitting, patch work, writing a letter and so on are all fine. However, you should avoid activities that involve you too much or are too addictive. If you are an avid reader who cannot stop reading without finding out what the ending of the story is, then put away the book and do something different and less exciting. Another wise step you should consider is to set some certain time limits and control the amount of hours spent on the things you usually do before the bedtime.