" If we expect perfection from man instead of God, we are indeed in trouble, and our personal problems, with others and with ourselves, are many. Our lives will then be easily soured.
Take, for example, a common situation: wedding invitations. More than a few people are annoyed when they get one, because it means a gift, and they "feel cheap" sending just a card, even though only casual friends. However, if they do not get an invitation, they are then hurt or offended. In brief, sinful man will always milk trouble out of any situation.
What then do you do? "It is better to trust in the Lord than to put confidence in princes," that is, men at their highest and best are still not to be trusted, for they are sinners. Our trust or dependence must be in the Lord.
Thus remember, people are sinners. If they hurt and disappoint you, it is because there is first of all something with you: you have put your trust in the creature rather than the Creator. We can enjoy people, be good friends and neighbors, and live best with them if we know ourselves and them as alike sinners, either saved or lost, but even as saved, still very capable of thoughtlessness and sin. Our trust must be in the Lord. "

― Rousas John Rushdoony , A Word in Season, Volume 1