There was once a baby lion left by its dying mother among some sheep. The sheep fed it and gave it shelter. The lion grew apace and said “Ba - a - a” when the sheep said “Ba - a - a”.

One day another lion came by. “What do you do here?” said the second lion in astonishment: for he heard the sheep - lion bleating with the rest. “Ba - a - a,” said the other. “I am a little sheep, I am a little sheep, I am frightened.”
“Nonsense!” roared the first lion, “come with me; I will show you.” And he took him to the side of a smooth stream and showed him that which was reflected therein. “You are a lion; look at me, look at the sheep, look at yourself.” And the sheep - lion looked, and then he said, “Ba - a - a, I do not look like the sheep — it is true, I am a lion!” and with that he roared a
roar that shook the hills to their depths’

This is from three kings, which is one of my favorite movies, i saw it again last week and this quote really stood out because it so true.

Archie Gates(clooney): You’re scared, right?
Conrad Vig: Maybe.
Archie Gates(clooney): The way it works is, you do the thing you’re scared shitless of, and you get the courage AFTER you do it, not before you do it.
Conrad Vig: That’s a dumbass way to work. It should be the other way around.
Archie Gates(clooney): I know. That’s the way it works.