Japanese cleaning consultant Marie Kondo takes tidying to a whole new level, promising that if you properly simplify and organize your house once, you'll never have to do it again. Most methods advocate a room-by-room approach, which doom you to pick away at your piles of stuff forever. The KonMari Method, with its revolutionary category-by-category system, leads to lasting results. In fact, none of Kondo's clients have lapsed (and she still has a three-month wait list). With detailed guid...