Those three things—autonomy, complexity, and a connection between effort and reward—are, most people agree, the three qualities that work has to have if it is to be satisfying. It is not how much money we make that ultimately makes us happy between nine and five. It’s whether our work fulfills us. If I offered you a choice between being an architect for $75,000 a year and working in a tollbooth every day for the rest of your life for $100,000 a year, which would you take?
Malcolm Gladwell, Outliers: The Story of Success