It all started when 14-year-old Hannah Salwen had a eureka moment. Seeing a homeless man in her neighborhood at the same instant she spotted a man driving a glistening Mercedes, she said, “Dad, if that man had a less nice car, that man there could have a meal.”

Until that day, the Salwens had been caught up like so many of us in the classic American dream—providing a good life for their children, accumulating more and more stuff, doing their part to help others but not really feeling it. So when Hannah was stopped in her tracks by this glaring disparity, her parents knew they had to act on her urge to do something. As a family, they made the extraordinary decision to sell their Atlanta mansion, buy a house half its size, and give half of the sale price to a worthy charity. At first it seemed outlandish: What, are we crazy? Then it became a challenge: We are totally doing this. Their plan eventually took them across the globe and well out of their comfort zone. In the end they learned that they had the power to change a little corner of the world. And they found themselves changing too. As Kevin Salwen says, “No one else is nuts enough to sell their house,” but what his family discovered along the way will inspire countless others, no matter what their means or resources are.

Warm, funny, and deeply moving, The Power of Half is the story of how one family grew closer as they discovered that half could be so much more.