The conversation you keep having in the shower

Emma has had the same conversation every morning for six weeks.

It starts in the shower, usually. The last real talk with Matt, the one on the kitchen floor where he said he wasn't sure anymore and she said almost nothing because she couldn't breathe. Except in the shower version, she says things. Good things. She asks the questions she should have asked. She points out that "not sure" isn't a reason. She's calm and sharp and completely unlike the person who actually sat on that floor.

Then she gets out, dries her hair, and feels worse than when she got in.

She's told her friends she's "processing". She's read that you have to sit with your feelings. But this doesn't feel like sitting with anything. It feels like being dragged back to the same room every day and losing the same argument in a new way.

The psychologist Susan Nolen-Hoeksema spent most of her career studying this exact loop, and she gave it a name that's become common: rumination. Her research, across decades, found something that goes against instinct. Going over a painful event again and again doesn't process it. It rehearses it. People who ruminate stay low for longer, feel more hopeless, and are worse at actually solving the problems they're chewing on. The replays feel like work. They're closer to a treadmill.

Emma isn't processing the breakup. She's re-living it with commentary.

So why do we do it? Ethan Kross, who runs a lab at the University of Michigan and wrote a book called Chatter about the voice in our heads, has a simple explanation. When something hurts, the mind zooms in on it. That's useful for a sprained ankle, less useful for a breakup, because the closer you zoom, the less of the picture you can see. From inside the shower replay, Matt's "not sure" is the whole world. There's no context, no future, no version of Emma who is not on that floor.

Kross's fix is one of the stranger findings in psychology, and one of the most useful. In a 2014 study he and his colleagues had people reflect on a stressful situation either the normal way, using "I", or by using their own name and the word "you", as if they were talking to a friend. "Why am I so upset?" versus "Why is Emma so upset?"

The name group coped better. They felt less distressed, they thought about the situation more clearly, and the effect showed up almost immediately. Kross calls it distanced self-talk, and the theory is that a tiny grammatical shift creates just enough distance to see the problem from outside it, the way you'd see a friend's problem. You already know how to be wise about other people's breakups. The trick borrows that wisdom for your own.

Emma tried it, a bit sceptically, in the shower the next morning. When the replay started she said, out loud, "Emma, you're doing the kitchen floor again. What would you tell Lucy if this were her?" And the answer came easily, because she'd literally told Lucy this: that "not sure" was his problem to solve, that no line she could have said would have fixed his doubt, and that she'd been braver on that floor than she was giving herself credit for.

The replay didn't stop. But it got shorter, and it started ending somewhere different.

If you want the practical version: when the loop starts, name it. "This is the replay." Then switch to your own name and ask what you'd say to a friend. Then, and this is the bit people skip, do something with your hands. Rumination lives in the gap between thinking and doing, and even washing up will close it for a while.

It's been another four weeks. Emma still thinks about the kitchen floor. But last Tuesday she got out of the shower and realised she'd spent the whole time thinking about what to cook.

You can't win an argument with someone who isn't in the room. But you can stop holding the room open for them.