What’s the secret to dressing better, falling in love and overall feeling happier? It might be as simple as cleaning your house.

That’s according to professional organizer Marie Kondo, who developed a decluttering technique now known as KonMari. Her first book, “The Life-Changing Magic of Tidying Up: The Japanese Art of Decluttering and Organizing,” was originally published in Japan in 2011 and in North America in 2014. It became a New York Times bestseller, and more t…
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