There comes a point where we need to decide that something is "good enough". But settling for good enough is a dead end. Good enough is always one step behind, one step in the shadow of something better.
Every artist learns when to settle, but the best of the best learn to treat each piece of work not as something to finish, but as a stepping stone towards something better -- as a step towards a higher vantage point where a greater perspective enhances creativity.
Instead of settling for good enough, climb towards something better.