Creative people worth their salt have an inner critic. This critical faculty is essential for the production of high quality work. External criticism can point to larger problems, but only after the work in hand has reached a certain point. The moment-to-moment decision making (keeping this, discarding that) of the creative process must be based on an internal critical assessment. Furthermore, while most creators value feedback from others, they recognize that ultimately the work as a whole must meet their own standards and satisfy their own inner critic.
German philosopher Friedrich Nietzsche suspended his inner critic, decided his writings were spectacular, and suffered a massive ego inflation. (Photo: public domain)