The Happiness Project: Or Why I Spent a Year Trying to Sing in the Morning, Clean My Closets, Fight Right, Read Aristotle, and Generally Have More Fun by Gretchen Rubin, HarperCollins, 2009 (original hardback publication date; now available in several other formats)
It occurred to me that it wouldn’t be a bad idea to do a formal review (well, as formal as these things ever are) of The Happiness Project, since that book kicked off my whole “Intentional Living” thing. I give credit to the book in Intentional Happiness and also on the home page of this website, but here’s some further information. Gretchen Rubin certainly doesn’t need my help in selling any more books, as she’s sold about a gazillion already, and I would like for everyone reading this to buy a copy of my book first, but then after that you should buy a copy of her book if you’re one of the half dozen people who hasn’t already done so.