Perfection or diminishing returns.

This might be the main challenge of any artist as they consider whether or not to call a work of art complete. Certainly, as one pours more and more time into anything it should, as the focus matches the chronological advance, become a better and better piece of work... however... this always comes at a sacrifice. The sacrifice is the time/focus that could be spent more rapidly advancing some other project since the speed of discernible improvement increasingly slows drawing toward the pinnacle of the original project's completion. Put another way... work harder to perfect something that less and less people can see the improvements or call it good, knowing it could still be made better, in order to pursue better overall timing and life efficiency in other ways. It is a challenge for both the perfectionists and the schedulers/planners among us.