You have two options here.
The first is to turn your hobby into a profession. You can start small, for example, get a job as a game tester, in one of the development companies or a branch. This can further open the way into the big gaming business as a game designer.
Or, you can try starting your own channel on YouTube or a similar platform, and talk about new projects, conduct letspays, do reviews, walkthroughs and etc. True, the competition there is now quite strong, so it will not be easy, we will need to come up with some kind of trick that would distinguish you from your colleagues in the craft.
If you are good at a word, you can try to get a job as an author in one from gaming publications such as RiotPixels, Navigator, Igromania, etc. If you can write interesting and informative texts, then this is a good start.
The most difficult, perhaps, will be the path of a cyber athlete. It requires a lot of commitment, continuous training and participation in various tournaments to maintain its prestige. And finding a professional team can be somewhat difficult, but you can start small and get a job in some rising star, so to speak. Or to one of the many teams, and from there to pave the way to the professional league.
And the second way is to cultivate willpower. Every time you work or study and feel the urge to play, just say no to yourself. Develop some kind of punishment system (or resort to the help of friends / parents) or checks that would motivate you to spend more time on what is really important to you, and not on games.
It is corny to draw up a daily routine where time will be given to both games and work / study. But it is better to try to make your "pleasant" and "useful" one and the same thing. You seem to be doing something useful, but at the same time you enjoy your work.