You don't get to be great by thinking your work is already good enough; then you don't push yourself to make it better
If even your good work is crap in your own eyes, and you keep pushing well beyond that because you think it still isn't good enough, you can (but won't necessarily) end up in the pantheon of your artform
Contrast this with publishing an LLM's first response to a query, which is the polar opposite course of action