Before quitting %100, i suggest limiting your playtime. I would set an alarm and go do something else and take regular breaks, or you can set a daily play time before quitting %100. Quitting suddenly may bring some drawbacks because these games can be really addictive if you let them.

I, too, sometimes take breaks and there are times i don't play at all. But i can understand your struggle. Gaming can be an addiction too and you should start by cutting the time that you spend on gaming rather than completely dropping it in my opinion.

If it is too bad, and let's say it effects you from attending classes or going work etc. i recommend professional help. Take care.