you either have a problem with a video game habit, or a video game addiction.
addiction is more serious. but habits can be a [censored] to break out of of and easy to fall back into.
I have used the 12 step program in my own life to deal with addiction.
you really have two options as for how to deal with video games
1) find a way to moderate your play
2) not play anymore.
I had to choose number 2 when it came to alcohol.
if you choose to moderate what you need are strategies.
1) never play a game without setting a timer. when timer goes off, you have to quit.
2) tell friends you tend to overplay games, and ask them to keep you accountable
3) tell roomies you either don't play video games, or only until the timer goes offf, and if they catch you breaking your rule, you owe the 50 bucks.
when you say "I can't help it" that makes me worry.
I feel like "I can't help it" could have two meanings.
1) you really can't help it. like my addiction to alcohol.
2) you can, but it is hard. I oversleep way more than my wife. if I can get away with it, and sometimes even when I shouldn't I do it. but for serious stuff I always get up. for example, I might oversleep and miss a class (i am grad student) but never enough to affect my grad/standing in class. I CAN help it, but often choose to oversleep. like today

I had nothing major to do, told myself I would get up by 9, did not get up til 10:30.
if you really can't help it, I would look at http://www.olganon.org/