Happiness books and books on de-cluttering are all the rage right now. The latest book from Gretchen Rubin (The Happiness Project) combines the two. In spite of the trendiness of her topics, there are some useful bits of advice in Outer Order, Inner Calm: Declutter and Organize to Make More Room for Happiness. Rubin offers a lot of suggestions for little actions that can make a big difference in our daily lives. The book offers the added bonus of being a quick read.