Almost every couple has one: the argument with a script. You can tell within two exchanges which one it is, you both know the middle, and you both know how it ends. It is tempting to read that as a failure of effort. Gottman's clinical research suggests something more forgiving — that the majority of conflicts in a long relationship are perpetual, rooted in durable differences of temperament, need or lifestyle, and are never going to be solved. What separates couples is not whether they have them. It is whether they can keep talking about them without contempt.

The distinction Gottman draws is between dialogue and gridlock. In dialogue, the difference is still there and still mildly annoying, but it has become a known feature of the two of you — occasionally even funny. In gridlock, every round has to be won, positions harden, and you both come away feeling less known than before. The same underlying difference can sit in either state. What moves it between them is usually whether each of you believes the other's position is legitimate.

Underneath a gridlocked position there is nearly always something being protected — a value, a memory, a version of yourself you are not willing to give up. The partner who wants everything planned two weeks ahead is not fussy about calendars, and the one who wants nothing on the calendar is not lazy. Each is defending something that made sense long before this relationship existed. The useful question is not 'why do you always' but 'what's the story behind this for you.' It is a slower conversation than the fight, and it settles nothing, which is exactly the point.

When you are not in the middle of it, name yours out loud together and give it a deliberately unserious name — the Airport Argument, the Thermostat, the Big Sunday. Naming it makes it a third thing in the room rather than something one of you is doing to the other. Then each answer one question: what is your side of this protecting. Do not try to resolve it afterwards. You are not having this fight for the last time. You are making the next round of it smaller and kinder.

SourceGottman, J. M. (1999). The Marriage Clinic: A Scientifically Based Marital Therapy. W. W. Norton & Company.