Sounds interesting that a book about "game" saved you from "game playing". Not sure what sort of game you're exactly referring to, though IMO video games that let you grind against scripted NPCs indeed could waste one a lot of time. However games that pit you against human opponents, when practiced adequately, can actually teach you a lot. There was a piece about how chess playing is being taught in the Wall Street to train decision making under pressure. Many video games can also help you achieve similar effects. So it's not all negative.