I saw Gretchen Rubin's Outer Order, Inner Calm at the library and thought it looked like it might be an interesting little read. It's a super fast little read full of Rubin's helpful decluttering tips. It's based on the premise that our inner feelings reflect our outer environment, which I agree with: there have been so many times when I was feeling overwhelmed, and simply cleaning up can really help!
There's nothing really new or earth-shattering in this book, but I found it a helpful refresher. I actually started looking at my books last night when I was in the middle of reading this and removed a few from my bookshelf, either that I've read and have no intention of rereading, or ones that I honestly don't intend to read. So while it wasn't exactly pack full of new tips, I found it helpful! :)