As someone who has spent her adult life avoiding the accumulation of clothes I don’t wear and stuff I don’t use, I read Marie Kondo’s The Life-Changing Magic of Tidying Up with a sage smile. Her two-step KonMari Method involves discarding items that do not ‘spark joy’ and organizing the ones left. For Ms. Kondo, a build-up of material clutter is a sure sign of a muddled, unhappy mind. Approach your possessions in a more attentive way, says she, and you’ll liberate more than c