I recently came across this quote from famous preacher Fred Craddock. I really dig it:
"When I was in my late teens, I wanted to be a preacher. When I was in my late twenties, I wanted to be a good preacher. Now that I am older, I want more than anything else to be a Christian. To live simply, to love generously, to speak truthfully, to serve faithfully, and leave everything else to God."