Marie Kondo's ideas have been linked to 'decluttering' (how I hate that loaded term, basically good ol' fashioned Spring cleaning) and OCD neatness (OCD is an actual anxiety disorder) the much more positive theory of her 'sparks of joy' that objects can give their owners is much less covered.
What a spark of joy it gives me to hear that someone recognise the happiness that a seemingly humble object can bring. She doesn't mean a wonder of the world (if there'll be any left soon) or a rare museum specimen, but anything coveted by it's owner because they just love it and deem it joyful to have around. It fights off the idea of having something because it cost a lot or because everybody else has one and puts the responsibility back on to ourselves for choosing what we surround ourselves with.
Linda Grant's The Thoughtful Dresser (2009) went towards this joyful idea but never thought-up a slogan to fit the theory. The message is with more consideration and discernment and less fervent searching for yet more bargains that often end up stored in the box room we can indeed be happy with our lot. Though most concentrate on the things that Kondo disposes of, like the things in our own lives that give us our sparks of joy, let's concentrate on the positive side of the message and really enjoy the things we already own.