I’m a couple months late on this, but I finally got around to reading What Makes Us Happy?, a lengthy article on the Harvard Study of Adult Development, a remarkable longitudinal study that has followed a set of Harvard men for over 70 years. It’ll take you a while to plow through it, but the outcome is worth it. It offers a fascinating portrait into what makes people tick, and the characteristics that predict happiness and success, and those that suggest failure and misery. I was struck by how much of it is rooted in simple physical health. Anyway, set aside some time, and give it a whirl.