I only recommend this one if you think you are a good writer. If you are a traveler first and a writer second, I wouldn't attempt it. I know this doesn't make much sense, but let me explain. Simply having the desire to travel isn't sufficient enough to sustain a writing career.
I also only recommend this one if you can stomach the uncertainty involved in pitching to magazines and newspapers. Chances are, they aren't going to be nearly as excited as you are about your latest article. Being a travel writer not only requires superior writing skills, but also excessive patience, self-confidence, and organization skills your mother would be proud of.
At this point, if you think you fit the bill and are still interested - go for it with all your might! This job could be the beginning of your travel freedom and the end of your financial worries.
David Whitley, a successful travel writer, has a very honest and content rich blog called "1001 Travel Writer Tips" for aspiring travel writers. You can click on the link to his blog on the left side of the screen under the "My Blog List" heading.
This post is the beginning of a series of posts about specific on-the-go jobs that can finance your European travels without tying you down.
"The time to enjoy a European trip is about three weeks after unpacking." -George Ade, "Forty Modern Fables"