I think these days too many people don't follow the golden rule of gaming: to have fun. I am an addict just like everyone else, if I'm not playing games, I'm thinking about playing games or on the forums talking about playing games. Hell, I even have a podcast about video games.
When you are this avid, however, I think you get to a point where you are in media influx so much so that you forget why you began gaming in the first place. If you find yourself doing mindless tasks, bored, but just because you want that special achievement or trophy, just stop. If you're not a masochistic gamer and Ninja Gaiden or Metal Gear Solid (insert any number) are too tough for you, just quit. Don't worry about it, it's not fun to keep trying over and over again (unless it is for you, whatever). Video games aren't intended and shouldn't be played like they are tasks and no one should concern themselves with playtime prior to playing the game.
For those of you who are "cramming" through games, just take some time off and play a game you love. If you are not eagerly awaiting the ending to just be done with the game, then you're on the right track.