" There was once a man who went to church and asked, 'Can it be that my ardour has deceived me, that I have taken a wrong turning and managed things badly? Oh, if only I could be rid of this doubt and know for certain I shall come out victorious and succeed in the end.' And then a voice answered him, 'And if you were certain, what would you do then? Act now as if you were certain and you will not be disappointed.' Then the man went on his way, not unbelieving but believing, and returned to his work no longer doubting or wavering. "

― Vincent van Gogh , The Letters of Vincent van Gogh