By and large a good rule for finding out is this: the kind of work God usually calls you to is the kind of work a) that you need most to do and b) the world most needs to have done. If you really get a kick out of your work, you've presumably met requirement a), but if your work is writing TV deodorant commercials, the chances are you've missed requirement b).
Frederick BuechnerYou can survive on your own; you can grow strong on your own; you can prevail on your own; but you cannot become human on your own.
Frederick BuechnerYour life and my life flow into each other as wave flows into wave, and unless there is peace and joy and freedom for you, there can be no real peace or joy or freedom for me.
Frederick BuechnerTo confess your sins to God is not to tell [God] anything [God] doesn't already know. Until you confess them, however, they are the abyss between you. When you confess them, they become the bridge.
Frederick Buechner