I'm one of those people who have quit TV, mainly because I look back on my childhood where the tv was always on. Though I read, wrote, played games and did more things than just tv, it was the realization of how much of my life I have wasted seeing commercials made me just quit tv. I do watch two programs a week which I get via itunes so sans commercials. It really isn't me putting a limit on shows; I just that don't have any interest in more than a couple. (currently breaking bad and walking dead). I have a tv that can't even get local channels for my consoles.
I also don't play games as much as I did growing up, but that is merely due to loss of interest. Every couple months, I might spend an entire weekend gaming and then lose interest after that point.
If you try stopping something cold turkey that you like, then odds are you will end on binging said thing you are avoiding (me with soda...) Your life revolves around avoiding said thing. The best way is to just replace one compulsion with a healthier one that you like.
sidenote: It always annoys me when significant others of gamers want the gamers to quit so they can have "quality" tv time together everyday for many hours -_-.