Having quit my full-time job and redirected my career nine months ago, I now meet lots of people who have done the same or are on the verge of it. Music is a common refuge among this restless group — the songs we listen to as we struggle with life-changing decisions, with lyrics that offer wisdom, humor, and reassurance in the face of uncertainty. They’re a tiny part of a personal transition, but an important one for many people, including me.