I have tied flies which dissatisfied me. But I don't have to have perfection. I really enjoy tying flies and then catching a fish---the fish are lots less picky than the tier.
When I'm not catching fish, I guarantee it has to do with my selection of fly or presentation; not the quality of the tie.
"You must not be too greedy in catching your said game (fish), as in taking too much at one time...That could easily be the occasion of destroying your own sport and other men's also." Juliana Berners (1450)