Several years ago, my husband and I hiked in the desert region around Las Vegas. The path proved to be treacherous, strewn with ankle twisting rocks. The minute we took our eyes off the path right in front of us, we would stumble. To keep moving, we had to focus straight down on our next step, the step after that, and the following step. Or risk falling and injury. It was trying, frustrating, and leaned toward exhausting. The thought struck...