Rollo May in "The Courage to Create" (W.W. Norton & Company, Inc., 1975., p. 12), paraphrases Kierkegaard, Nietzsche, Camus, and Sartre saying that "courage is not the absence of despair; it is, rather, the capacity to move ahead in spite of despair.
I don't know how often I have had to overcome a sense of inadequacy when composing in order to push ahead with a composition. Sometimes it's just a matter of ignoring that feeling and shutting off the negative faucet of self-negation in order to make headway. Limitations are always there; I could look at my life as a composer as being framed by all sorts of technical limitations. But I also look at the diurnal work in the art as being that of trying to improve and move on in spite of those limitations. Ear-training, musicianship, clarity of thought within the art are developments at which there is never an arrival point. One can always improve. But the paradox is that we are always arriving in that we create continually one project after another. Hence, our "Way" in the arts is both a continual journey and a continual arrival. (Acknowledgements to R.H. Blyth, Zen and Zen Classics, vol. II, The Hokuseido Press, 1964, p. 196).