As Close as Necessary to Perfect
The thing is, with limitless focus and energy, just about everything can be improved.
That’s not the question.
The question is: Is this thing you’re working on as close to perfect as it needs to be? As close to perfect as your customer demands? As close to perfect as the budget can allow?
It’s not settling to walk away from something that’s CNP. It’s simply a smart allocation of your resources.
[Please don’t forget the opposite: BGE. Which stands for Barely Good Enough. The thing is, BGE rarely is.]