In the middle of Turkey, in a region called Cappadoccia, I met a South African doctor named Mike. A friendly though peculiar fellow, he had entered medical school at age 18 (as they do in many countries; the US system is quite different), not having any idea what he wanted to do with his life. He worked through six years of school and graduated from medical school, only to decide that he hated it and had no desire whatsoever to be a doctor.
Though I'm not sure if it was his first destination or not, he flew to London, where he played guitar in the subway for change. He made enough to pay the bills, but no more. As a "Junior Doctor" (which is what they call med school graduates who have not completed specialty training), he was eventually able to get a job working in a hospital, which made him enough money to save up and travel.
I enjoyed his company, but he was a rather sardonic fellow with a truly "unique" perspective on life. At the very least, I will never forget "the doctor who played guitar in the subway to survive."