I think Dave probably has the most direct path, tends to look bad on the resume though.
Chuck's advice is dead on. I watch the transformation of guys all the time that come into the academy where I train and just totally change. Find the right team and you are squared away. The second part of the answer for me is to compete. If you don't say I am fighting / competing in X event on the 12th of July 2009 (for example) you really aren't as focused. Competition just drives me to train at the absolute the best I can.
What we think, or what we know, or what we believe, is in the end, of little consequence. The only thing of consequence is what we do. -John Ruskin