“Hi, my name is Dirk Strider. And I’m going to be kicking my own ass for the rest of eternity.”
Have you ever started working on something you think is going to be funny, but the longer you look at it, the more sad you get? Until you don’t even know why you did it anymore??
“good enough” is when you are working on something and are happy with most of it but can live with a few imperfections, useful when needing to move on from sketch to inking/coloring or what have you.
“fuck it” is when you absolutely hate what you’re doing every step of the way but you post it anyways, very useful during art blocks.
both are useful to help you move on and not obsess over making it perfect, because art is anything but perfect, even photo realistic artists probably see imperfections that someone else might not catch