Even in failure a lesson is learned. 

To keep trying is to not let negativity overpower your positive inner light.

To not give up is to keep your free will, by tapping into a force greater than those obvious, and easy, weakness of the fragile mind and body. To try, fail, and to learn. To try again, fail once more, and to learn anew. To try, and succeed in a way you had never considered before- that is truly beautiful. 

That is confidence.