Like most things in life, there's a balance to be struck. If you always accept "good enough" and move on, things will be low-key crappy forever and never get to the point where they are actually good. If you never accept "good enough" and move on, you will never get anything useful done because you're going to always find some "one last thing" to polish. The best path is to pursue excellence when you can, but accept that sometimes you have to let things go.