I had a discussion with a friend not too long ago about faith vs confidence. I think it started over a comment about having the faith to know you can do something that may seemingly be out of your reach. My argument was that faith is believing in what you cannot see, what cannot be proven; that confidence is what makes you believe you can climb that mountain or write that book or build that building. His argument was that "you have to have faith in your abilities".
What is your definition of faith?