Good call. I've taken a few months (up to six) hiatus from video games before, and I've accomplished impressive things with that time. I have two suggestions to help you succeed in improving your time management:
1. Set up daily/monthly goals so you can have the satisfaction of measurable progress.
2. Develop a framework for how you will spend your time each day. Do it now, while you have motivation. Your motivation will only last for two weeks at most; after that, a framework for your schedule/habits will help keep you on track.
--
Official Queen ***** of the Universe!