How to Retire 35 Years Early
Wall Street Journal's Market Watch did a feature on Mr. Money Mustache, a man that retired when 30. It polarized and sparked some interesting comments from readers. He still works some but only on his terms.
He gets into more detail on his blog here http://www.mrmoneymustache.com/
I guess the main take away for me was you can pare your costs significantly once you differentiate between your "needs" and your "wants".