I understand, I'm addicted to computers since 1996 when I was 10. But it's possible to change it setting some goals,trying to go outside more, do some external activities (aka walk, bike, etc.) But if you live in a place where the winter is severe then I have no idea what one could do. It's easy to forget about life when using electronic devices in general but try to set alarms to remind you that you have/need to do other stuff, it helps you to break the pattern.
