We all crave for happiness. If we are happy, we can be motivated to reach our biggest goals. But how do we achieve happiness? Gretchen Rubin's blog is there to help. She has written a book, also called The Happiness Project. It is her "account of the year she spent test-driving studies and theories about how to be happier." You can grab yourself a copy now but make sure that you visit her website often, too. It is most definitely one of the best blogs to motivate you today.