How to avoid being addicted by game playing in the game design career

I knew this will happen:

My students who study game design and development misused my saying "I am not playing game, I am doing research".  

I think to achieve the status like me: getting paid for playing games, you need to discipline yourself and be professional in game playing. Before starting to play a game, you should set your mind whether you are playing the game for fun, for study (game design), for research (for review) or for other purposes. Once you have your mind set, you should decide up front how much time you should spend on playing this particular game. Then promise to yourself that you will abide the preset time limit, and begin playing according to the limit. 


So, it is YOU who decide when you want to study a game, design a game, or even get addicted in a game. And this will lead you to being a professional game designer!