One of the critical decisions of every career:
"Well, there's plenty more to do, I'll do the least I can here and then move on to the next one."
"I only get to do this one, once. So I'll do it as though it's the last chance I'll ever have to do this work, to please this customer, to ring this bell."
As little as possible. Or as much. The system might push you to become mediocre, but that very same system rewards excellence. The perception that the minimum is viable is built deep into our notion of productivity, but it turns out that the maximum is valuable indeed.
The biggest cause of excellence is the story we tell ourselves about our work.
It's a choice, a commitment and a lifelong practice.