I just found out about this book Be Nice (Or Else) by Winn Claybough, a motivational speaker. It sounds great, and has a perfect 5-star rating on Amazon, which I've never seen before. The book teaches why and how to be nice, and shows how being nice makes you a happier person. As a side effect, it makes other people around you happy too. I'm getting this book tomorrow. I have lots of chores on my list, and I hope I can remember to be nice while I'm out and about.