After years of working with couples — and being in a long marriage myself — there are things I know now that I didn't know at the start. Things I wish someone had said to me directly rather than leaving me to discover the hard way. Here are some of them.

Your partner is not your enemy.

This sounds obvious. But in the middle of a bad conflict, when you're hurt and defensive and the other person seems completely unreasonable, it stops feeling obvious. What you need to remember in those moments: you're on the same team. The problem is the problem. Your partner is not the problem. Keeping that orientation — even imperfectly, even when it's hard — changes what you do next.

Being right is usually less important than being connected.

You can win the argument and lose the relationship. Not dramatically — incrementally. Each time you choose being right over being close, you make a small withdrawal from the account. Over years, those withdrawals add up. Most couples who end up in serious trouble didn't get there through a catastrophe. They got there through the accumulation of small choices to be right rather than to repair.

Your partner's behavior almost always makes sense — from inside their experience.

This was the hardest one for me to really believe. When someone you love does something that seems inexplicable or unreasonable, there's always a logic to it if you understand their history, their fears, what they're trying to protect. That doesn't mean the behavior is acceptable. But it means your partner isn't arbitrary or fundamentally broken — they're operating from a coherent internal world that you may not fully understand yet.

Repair is everything.

How quickly and how genuinely you can move toward each other after a rupture — that's one of the strongest predictors of relationship health. Not whether you fight. How you come back. Start practicing repair early and practice it often.