You really never know what opportunities you will be given or where you will end up.  

I've thrown around various ideas for quite some time (Teach for America, teaching English, teaching on Native American reservation)... never thinking they would all come together in one opportunity.  Clicking "Commit" on the 2 year agreement to teach in New Mexico with Teach for America was the both hardest and easiest thing.  It was the easiest thing because it is such a great opportunity, but it was also the hardest because there is so much unknown and it is going to be such a challenging job.