Our error may be in trying to hold fast to old judgments that no longer apply. The world is ever-changing and so are we and so are others. But we seem to resist that fact, and insist upon our certainties. We insist upon our beliefs. We make assumptions that the present situation will be the same way something similar was in the past, and affect us the same way. But it doesn't, even though we might react as if it does. And we assume people will be the same way they were in the past as well, but people can change too, and soften over time.... or harden. Perhaps life cycles around in the way it does in order to show us exactly how we have changed, for the better or the worse, if we are aware enough to even notice. Everything is variable, and relative. Everything. So there's no glory or percentage in being stubborn and unbending, hard-headed and closed-minded. Strength without flexibility is breakable, and not really worth so much in the end.
I make room in my life for changing points-of-view and allow for major shifts in my judgment from one day to the next.