I brought a stack of books home from the library the other day. Four of the six were on the newly acquired books to the library. Because I'd read her first book and heard good things about the sequel I decided to give it a try.
Marie Kondo's Spark Joy, the sequel to her critically acclaimed The Life-Changing Magic of Tidying Up where tidying doesn't mean straightening the house but, instead, starting from the task of purging; continues here, with the application of 1) physically touching everything and deciding if it sparks joy and 2) discarding it if it doesn't. But, she does clarify that even if it isn't a useful item if it sparks joy that it's ok to keep.
I didn't love this book, or even like it but because she 'clarified' some of her wacky philosophies the book was ok and I acquired some take-aways.