Become a professional gamer.  This is a dream most kids have...but who knew you can make a living at it.  I know I would have tried harder and given up even more sleep to games if I could have actually made some scratch with it.

I'm sure it's not all the glamour you might be picturing, but if you're good, go for it.

The CPL (Cyberathelete professional league) is a good place to start.

Another view can be found at http://www.kuro5hin.org/story/2004/7/23/235053/081.  And even more info from the BBC.