Fifteen years ago, I left film school. I was studying at the School of Visual Arts in New York City, making short films that looked creative but felt hollow. I could frame a shot. I could edit a scene. But I could not convince myself it mattered. So I walked away. At 21, I answered a Craigslist ad for a dog walker. I almost didn’t go. A week later I was holding the leash of a Saint Bernard puppy, trying to look confident while thinking I might get dragged down the block. I th