The chances of a high school student eventually becoming first violin for the Boston Philharmonic: one in a million.

The chances of a high school student eventually playing basketball in the NBA? About the same.

In fact, the chances of someone growing up and getting a job precisely like yours, whatever it is, are similarly slim. (Head of development at an ad agency, director of admissions for a great college... you get the idea). Every good gig is a long shot, but in the end, a lot of talented...