Nights are not for thinking,they are for sleeping and avoiding odd dreaming

...I don't remember whether someone have ever told me this or it is genual fact, but I repeatedly tell it to myself:

-Nights are not for thinking,they are for sleeping and avoiding odd dreaming.

You may think it is funny, but actually it is not. I have serious issues regarding too much thinking, a bit less doing and lack of healthy sleeping. Whatever I tried-does not work, no counting stars/sheep (wtf?)/imaging numbers/hot actors/coursework material/and...future. The last one should be underlined, but who cares,it is already imprinted in my consciousness. That's one of the things about my selfish-egocentric-trying-not-to-be-material-lame self, this word is buzzes me. It does not matter how much buzz it caused when you are in high school, it buzzes even more 2 years after your school graduation. The queston is... (should I be bothered to confess it?) - How to stop it.
If you know the answer of it, I dare you to share it with me. You may receive a cookie, or a buzz...