For most of us, outer order contributes to inner calm. And for most of us, a rigid, one-size-fits-all solution doesn't work. The fact is, when we tailor our approach to suit our own particular challenges and habits, we're then able to create the order that will make our lives happier, healthier, more productive, and more creative. Gretchen Rubin has found that getting control of our stuff makes us feel more in control of our...