Here's a guy I didn't know a whole lot about - Griffiths. He succumbed to cancer this year, but if you've never seen his work, start looking for it - some brilliant photojournlism - Magnum guy. He made his name in Vietnam - his photographs helped to turn the tide of U.S. public opinion against involvement in Vietnam. He had a full career beyond that as well, documenting the oppressed and voiceless. His work is gritty, on the ground with the people - the edges are rough.
In light of recent discussions here on RFF regarding "success," I found his story inspiring, having started his career as a pharmacist. The key for him being able to break out of his boring job, as with all of those who succeed at anything, was hard work - the "drive." I think some may be able to relate to needing to take action out of boredom as Griffiths relates in the interview.