106. When we have been offended or let down, forgiveness is possible and desirable, but no one can say that it is easy. The truth is that “family communion can only be preserved and perfected through a great spirit of sacrifice. It requires, in fact, a ready and generous openness of each and all to understanding, to forbearance, to pardon, to reconciliation. There is no family that does not know how selfishness, discord, tension and conflict violently attack and at times mortally wound its own communion: hence there arise the many and varied forms of division in family life”.(Familiaris Consortio 21)
I think it is true that all families suffer these from time to time. The difference for the fruitful family is that when these arise they are dealt with more or less quickly before they become major issues. For your reference, remember that Amoris Laetitia is online here.