How to make yourself to go to bed early

Just schedule automatic computer shutdown
eg. shutdown.exe /s /f /t 900 /c “Shutdown in 900 seconds”

Follow the guide to schedule it for every day
http://www.howtogeek.com/howto/30758/make-your-pc-shut-down-at-night-but-only-when-youre-not-using-it/

Or use my ASS. Stands for Automatic Shutdown Scheduler! It is a  simple program I made to create the task for you.
(set time values in config file, you can also remove the scheduled shutdown setting the argument removeShutdown to true)

download

To abort the immediate shutdown open cmd and type “shutdown /a”.