" often the first thing we know about ourselves is not what we are—it’s what we aren’t. We mark ourselves as not-this or not-that, the way Ian was quick to say he didn’t want to sit at the same desk all day. But self-definition cannot end there. An identity or a career cannot be built around what you don’t want. We have to shift from a negative identity, or a sense of what I’m not, to a positive one, or a sense of what I am. This takes courage. "

― Meg Jay , The Defining Decade: Why Your Twenties Matter—And How to Make the Most of Them Now