Each person I pass on the street has their own ambitions, worries, friends, crushes, favorite foods, and pet peeves. And while I’m living in my own body, seeing the world through my eyes, feeling like the main character in my life, I might appear only once as an “extra” in someone else’s life, walking my dog in the background or driving a car they’re passing in traffic. It’s a strange feeling, and it’s a comforting one.