If you've read Marie Kondo's book on this same subject, you'll see a lot of similarities... And a lot more foul language. This isn't a bad thing. This book is written in the way that a lot of people talk. The information is useful and well organized. The book is different enough from the Kondo's book that even if you've read her's, this one is still with a read. If you haven't, there's no benefit to doing so. This book will give you what you need.