It's extremely difficult to be an actor, for many reasons: It's mostly unrewarding financially. It takes a lot of hard work before an actor even gets a part. A career is apt to be short-lived. The field is incredibly competitive. Cream does not always rise to the top. And yet actors young and old line up by the thousands wanting to do it. What fuels this desire? What is it that drives actors to withstand the frustration of not getting parts, of...