(Proverbs 19:13 KJV) A foolish son is the calamity of his father: and the contentions of a wife are a continual dropping.
A “foolish” (3684) “son” (1121) is equated with a nagging “wife” (802). That I can understand. Both make life miserable. It also seems to indicate that the offspring is a greater tragedy than the spouse. Notice that the son is destructive while the wife is just extremely irritating. I would think it would be the other way around, after all the son will eventually move out the wife is until “death do us part.”
Is it possible that fathers are destroyed by the foolishness of their children because they had a hand in training them? You wife has a developed personality when you were married. I guess you could make it worse but ultimately being a nag is her issue before God, not yours. When you see that your son or daughter have no common sense or intellectual foundation you don’t really have any one else to blame.
So? If it is not too late, get into the parent role immediately. That starts with setting the example. If your children are grown, it may be too late, it may not. Do the best you can. Repent and confess as needed. God will forgive. Hope that your children will.