Yoga has helped me figure out a lot of things. For one, that even people over six feet tall can touch their toes. (So yes, that means you can, too, with enough practice and encouragement.) One night, one lesson, one nugget of insight stands out in particular, though. Usually overflowing with bad jokes we can’t help but laugh at, my yogi was overflowing with wisdom, sharing with us his tidbits of knowledge as we struggled through Baddha Parivritta Parshvakonasana. His words became my mantra for the next hour — mostly just so I wouldn’t forget to write down what he said. He prefaced...