Has this ever happened to you? While searching for the Valentine’s Day centerpiece, you stumble across the Christmas wrap you bought at the half-off-after-holiday sale two years ago. You still don’t know where the centerpiece is. Or you discover six partially full peanut butter jars in the pantry while putting away the new one you just bought because you were just sure you were all out. Or how about this: You end up giving a brand-new too-small shirt to the Salvation Army because you lost the sales receipt and just never got around to taking it back to exchange. Have you ever gone out to dinner for the sole reason that there wasn’t one clean dish in the house? If you answered yes to any of the above, chances are you know something about disorganization and clutter. And that includes just about all of us at one time or another—especially …