In the end it all comes down to this: you have a choice (or more accurately a rolling tangle of choices) between giving your work your best shot and risking that it will not make you happy, or not giving it your best shot - and thereby guaranteeing that it will not make you happy. It becomes a choice between certainty and uncertainty. And curiously, uncertainty is the comforting choice.
Art & Fear: Observations on the Perils (and Rewards) of Artmaking (ed. Image Continuum Press, 2001) - ISBN: 9780961454722