Longtime couple want a mediator to decide who’s right

DEAR ABBY: My husband and I have been married 56 years. For the past year or so, we quarrel about everything — major issues and minor, insignificant things. There is nothing but bickering, disagreement and conflict. We can have a couple of good days and then fight over some small issue, or an innocent response or comment from one of us — and in seconds, we’re arguing.