During a power outage a few weeks ago, my kids and I spent some time talking about how strange it was that we kept flipping light switches when we entered rooms. They weren’t going to do anything, and we knew it. Still, after laughing over flipping the switch in the kitchen, we’d walk into the next room and try to turn the lights on without even thinking about it. The habit of turning on lights has become so ingrained into each of us that it is simply automatic. There are thousands of these behaviors we have repeated so many times that we don’t have to think about doing because we have develop...