It's grabbed me. More than Swedish Death Cleaning, which is great too.
The bottom line is - we all have far more than we need and let's only keep the stuff we love. (and need). Thinking you might need something, is not needing it. On the other hand, I just got a commission to write a Victorian story. I secretly congratulated myself for keeping a book called 'Victorian Remedies'. I have looked at it perhaps three times in 20 years. However, now now I might need it, in case one of my characters gets sick, I know exactly what to dose him with, probably some horrible salts and vinegar concoction.
(But I could have found that on the Internet).
I still contend that Books are not clutter. And though I am folding the KonMari way now, there are some ideas of Kondo I will never adopt. I will never hide my bookcases in a cupboard! That would cheat my guests! Of course, I could always tell them where the books are...
She's right though. Stuff is stress. Keeping only those things that give you joy, is a good, inspiring idea.
For the last several days, I've been meeting an old calendar everywhere. It was kept because it has pretty pictures. But somehow it wandered out into the living room and from there to the lounge and even onto the dining room table, If I get annoyed when I see something, it's time to let it go!