Whether it’s right or not, this book sounds fantastic:
Making art provides uncomfortably accurate feedback about the gap that inevitably exists between what you intended to do, and what you did. In fact, if artmaking did not tell you (the maker) so enormously much about yourself, then making art that matters to you would be impossible. To all viewers but yourself, what matters is the product; the finished artwork. To you, and you alone, what matters is the process: the experience of shaping that artwork.