Let’s just say zen would not be the first word I’d use to describe myself. I fall more into the high-strung, nervous-about-everything camp. So mindfulness—a mental state achieved by focusing your awareness on the present moment—felt like a long shot for me. But living mindfully is having a major moment, billed as a cure-all for everything from anxiety to sleeplessness to obesity. At 42 and at my highest weight ever, I was willing to try anything.