yeah I have a similar problem when playing pc games. I played through infamous on ps3 the other week and managed to mostly just play the game without distractions.
i'll be playing a game and then i'll be like "i should alt tab and check mmo-champ and some other stuff" every like 15 minutes.
I have been forcing myself not to do that lately and not regretting it (played through deus ex hr pretty quickly, going through fable 3 decently focused as well even though the game is kinda meh.