Overwhelmed by student debt and underwhelmed by your career choices? It’s normal to feel anxious. The economy is undergoing a radical transformation as technology changes the nature of work and some jobs disappear. To make matters more complicated, most industries are dominated by a handful of superstar, productive firms that shower their employees with most of the economy’s wage gains. If you work at these firms, you get more raises, learn useful skills, and get a stamp of approval that offers credibility throughout your career. If you don’t, your career and wages could stagnate.