Maybe we are arguing semantics.
Whether it the the internal fear (conscience) that makes you meet your professional responsibilities for fear of what will happen if you screw up, or an external fear of what the regulators will do to you if you mess up...
I can't think of any profession that doesn't have tough sanctions to discipline screw ups if required - e.g. doctors/ LAMES/ lawyers/pilots can all have their licenses removed for screwing up
Then I guess there are the "true professionals" that always give their best, whether on the flight deck or playing with their children