It seems to me that the reason so many people feel the need to use fiscal discipline is to compensate for the lack of integrity they display the rest of the time, it’s a kind of band-aid over the larger problem that they haven’t bothered or managed to be worth listening to or to make their words have white without threats to back them up.
It does take a lot of mindfulness to think carefully about your words and actions and maintain that sort of entegraty throughout all your interactions with someone.