We’re bombarded by messages telling us that more, bigger, and better things are the keys to happiness—but after we pile up the stuff and pile on the hours, we end up exhausted and broke on a planet full of trash. Sarah van Gelder and her colleagues at YES! Magazine have been exploring the meaning of real happiness for eighteen years. In this much-needed volume, they marshal fascinating research, in-depth essays, and compelling personal stories that lead to a life-altering conclusion: what makes us truly happy are the depth of our relationships, the quality of our communities, the contribution we make through the work we do, and the renewal we receive from a thriving natural world. The authors offer creative ways to cultivate a happiness that is sustainable in every sense: one that is nurturing, enduring, just, and life affirming for individuals, society, and the earth.