Good stuff.  Do what it takes to get yourself in order.  That goes for anything.  If you go out to the club and binge drink til your liver dies on you, that is of course a big negative.  As with WoW, if you're spending too much time in the game, then quitting would be a positive.  If you decide to come back later, you will know how much to play and when to go out.  It's just how everything is in the world. 

Reminds me of this comic by Sinfest.com: