The Happiness Project

by Gretchen Rubin

I decided to tackle both the physical and mental aspects of energy. For my physical energy: I needed to make sure that I got enough sleep and enough exercise. Although I’d already known that sleep and exercise were important to good health, I’d been surprised to learn that happiness—which can seem like a complex, lofty, and intangible goal—was quite influenced by these straightforward habits. For my mental energy: I needed to tackle my apartment and office, which felt oppressively messy and crowded. Outer order, I hoped, would bring inner peace. What’s more, I needed to clear away metaphorical clutter; I wanted to cross tasks off my to-do list. I added one last resolution that combined the mental and the physical. Studies show that by acting as if you feel more energetic, you can become more energetic. I was skeptical, but it seemed worth a try.