Stop doing these 8 things if you want your marriage to last, therapists say

Marriage doesn't fall apart overnight. It usually erodes through small, repeated habits that couples barely notice until the damage is already done.

Therapists who spend their careers sitting across from struggling couples tend to see the same patterns show up again and again, long before anyone mentions the word divorce. What's reassuring is that most of these habits are fixable once you know what to look for.

Below are eight behaviors relationship experts consistently flag as relationship killers, along with what the research actually says about why they matter.

1. Shutting down instead of engaging

When conversations get tense, it's tempting to just go quiet and wait for the storm to pass. Researcher John Gottman calls this stonewalling, and it's one of four communication patterns his decades of couple studies identified as reliable warning signs. The Four Horsemen are criticism, contempt, defensiveness, and stonewalling.

The problem with going silent is that it leaves your partner talking to a wall, literally. These four communication styles, once they become frequent, tend to signal a relationship in trouble, while healthier relationships repair them when they do appear. Therapists generally recommend naming the need for a break out loud rather than just disappearing emotionally mid-conversation.

2. Letting contempt creep into how you speak to each other

Eye-rolling, mocking, sarcasm dressed up as a joke. This is contempt, and according to Gottman's research it's the single most corrosive of the four warning patterns. Contempt is the most destructive of the Four Horsemen and the single greatest predictor of divorce, communicating disgust and superiority toward your partner through eye-rolling, mocking, sneering, and name-calling.

What makes contempt so damaging isn't just the words themselves, it's the message underneath them. Contempt doesn't just attack behavior or even character, it attacks your partner's worth as a human being, saying you are lesser, you are defective, you are not deserving of respect. Therapists point out this pattern rarely appears out of nowhere; it usually builds up from resentment that never got addressed directly.

3. Attacking character instead of naming the actual problem

There's a real difference between saying "I felt hurt when you forgot our plans" and saying "you never think about anyone but yourself." The first is a complaint about a specific behavior. The second is criticism, and it puts your partner on the defensive before the conversation even starts. A healthy complaint sounds like "I'm upset that you didn't call," while criticism becomes an attack or judgment on the other person's beliefs, personality or sense of self. Therapists often trace this pattern back to frustration that hasn't found a clearer outlet. Sweeping generalizations like "you never" or "you always" are usually a signal worth pausing on before the sentence finishes.

4. Defending yourself instead of actually listening

Defensiveness feels protective in the moment. Your partner raises a concern, and instead of hearing it, you immediately explain why it's not your fault, or worse, flip it back onto them. Gottman's research places this squarely among the four patterns that predict long-term trouble in a marriage. The irony is that defensiveness rarely calms things down. It tends to escalate the exact conflict it's trying to avoid, because the other person now feels unheard on top of whatever originally bothered them. The pattern showing up in a relationship isn't a death sentence, but what matters is what a couple does once they can actually see it happening. Taking even partial responsibility, rather than deflecting entirely, tends to de-escalate faster than any defense ever could.

5. Expecting your partner to read your mind

No matter how many years you've been together, your spouse cannot actually hear your thoughts. Yet plenty of couples operate as if unspoken expectations should be obvious by now, and then feel quietly betrayed when they aren't met. Your partner isn't a psychic, no matter how long you've been together, and expecting them to just know what you need is unfair and sets you up for disappointment. Therapists are consistent on this point, encouraging clear, direct communication where you speak up about what's on your mind instead of waiting for your partner to figure it out. It sounds almost too simple to matter, but plenty of long-term resentment traces back to unspoken assumptions nobody ever said out loud.

6. Letting physical affection quietly disappear

Somewhere between busy schedules, parenting, and just getting comfortable with each other, small physical gestures often fade first. No more hand-holding on the couch, no more quick hug in the kitchen, nothing that isn't strictly necessary. Therapists often see couples who've stopped holding hands, hugging, or even sitting close, even though those small gestures function like emotional glue, with a quick hug or a hand on the shoulder communicating presence without needing words. It's a small habit to lose and an easy one to rebuild, which is probably why therapists bring it up so often. Nobody needs grand romantic gestures every week, just consistent, ordinary touch.

7. Bringing outside stress home and taking it out on each other

A rough day at work, financial pressure, family drama. All of it tends to follow people through the front door, and too often it lands on the person least responsible for it, your spouse. Letting outside stress bleed into a relationship creates tension that doesn't need to be there, and therapists generally suggest tackling stress as a team instead of taking it out on each other, since simply acknowledging that both of you are stressed right now can shift the dynamic from blame to support. That single sentence, said out loud before tempers flare, does more preventive work than most couples give it credit for.

8. Letting appreciation quietly run dry

It's easy to stop noticing the small things a partner does once they become routine. The coffee made every morning, the errand run without being asked, the patience during a rough week. Over time, that lack of acknowledgment starts to feel like invisibility. Therapists constantly see couples who feel unappreciated, and something as simple as saying thank you for the small stuff can make a real difference, since gratitude functions as glue for a relationship. It's easy to let a partner fade into the background of a busy life, but relationships need attention, even if that just means sitting down together for coffee or watching a show side by side. None of this requires grand romantic effort, just the habit of noticing out loud.

None of these eight patterns show up in isolation, and most couples will recognize at least one from their own arguments. What separates struggling marriages from resilient ones usually isn't the absence of these habits entirely, it's how quickly a couple notices them and course corrects. Therapists tend to agree that awareness alone changes very little, but awareness paired with a genuine willingness to adjust is where most of the real repair work actually happens.