" A job is a vocation only if someone else calls you to do it for them rather than for yourself. And so our work can be a calling only if it is reimagined as a mission of service to something beyond merely our own interests. Thinking of work mainly as a means of self-fulfillment and self-realization slowly crushes a person. "

― Timothy J. Keller , Every Good Endeavor: Connecting Your Work to God's Plan for the World