I think the pastor's quote was this one, posted above:

Dance like no one is watching,
Love like you'll never be hurt,
Sing like no one is listening
and live like it's heaven on earth!

It's attributed on some sites to Mark Twain, and on many others to William Purkey, who appears to be a professor who writes self-help books. The pastor is in "recovery mode" after Easter, so I can't get hold of him to ask (and he might not be in a mood to be questioned this week).
To me, the source of the words will always be Kathy Mattea and her beautiful voice, even though she isn't the one who wrote them.
-Joe Offer-