Japanese cleaning consultant Marie Kondo takes tidying to a whole new level, promising that if people properly simplify and organize their home once, they'll never have to do it again. Most methods advocate a room-by-room or little-by-little approach, which doom a person to pick away at piles of stuff forever. Her 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 waiting list).