The Real Reason Your Colleagues Live Rent-Free in Your Head at 3am

It’s 3am. You’re wide awake, staring at the ceiling, replaying a conversation you wish had gone differently. You tell yourself you should be asleep, but your mind insists on looping the day’s unfinished business, “what did they mean by that?” “Wished I’d something in reply” “ surely they didn’t take what I said in that way – it wasn’t meant it that way” “what can’t they just get on?” or that one email you still haven’t answered. Sound familiar?

For many of us, the reason we can’t switch off at night isn’t caffeine, late-night Netflix or the every growing to-do list itself, no it’s often the people dynamics at work. The unresolved tension in a meeting. The colleague whose behaviour constantly undermines you. The team members not team playing. The awkward silence after someone dismissed your idea. These are the moments that hijack your sleep.

We like to imagine work is about strategy, planning, numbers, sales, delivery, execution. But if you peel back the layers, what keeps leaders and teams awake isn’t the technical stuff. It’s the behaviours. How people show up, how they react under pressure, what’s starts as a misunderstanding that escalates to conflict and how that then gets handled or ignored.

Think about it. That spreadsheet you didn’t finish or blog you haven’t yet written? It probably won’t wake you up at 3am. But the way a team member publicly questioned your ability in front of others? That sticks, that hurt. The missed deadline? Frustrating, yes. But it’s the lack of accountability or the blame-shifting that eats away at you in the early hours.

Our bodies may be resting, but our brains are still in negotiation mode, trying to rewrite scenarios or find a way out of discomfort. When the dynamics at work feel off, unresolved or toxic, our nervous system struggles to switch off. We carry it home, into our evenings and then to bed and into the fragile hours of the night.

Here’s the uncomfortable truth: most organisations underplay the importance of behaviour. They’ll invest in systems, training, technology but when it comes to the people dynamics, the “soft skills” the assumption is that we’ll all just “get on with it.” Except we don’t. Conflict avoidance festers, passive-aggressive habits become routine and small fractures in trust grow into major fault lines.

The result? Leaders lying awake at 3am, replaying through scenarios, wondering how to regain control. Teams disengaging, morale sinking, collaboration stalling. And the business impact? Lost productivity, stalled projects, wasted energy. Bottom Line impact.

So what’s the alternative? It starts with bringing behaviours into the daylight. Naming them. Talking about them. Creating a shared language around HOW we work together not just WHAT we’re working on. It means giving people the skills and tools to recognise when behaviour, whether your own or others, is driving conflict, distrust or even worse paralysis.

Leaders especially need to model this. A team will take its cue not from the values on a wall but from how their leader responds under pressure. If the values on the wall are not congruent with what is being displayed in the behaviours in the room, there is a huge problem. Do you shut down? Lash out? Avoid? Or do you pause, acknowledge what’s happening and deal with it directly? That modelling is what shifts culture.

If your sleep is being hijacked at 3am, it’s a signal worth paying attention to. It’s not just stress, it’s your subconscious telling you something at work needs addressing.

The call to action is simple: don’t wait for another sleepless night. Start the conversation. Shine a light on behaviours. Because when people dynamics improve, so does your sleep and so does your business. We all know how important sleep is.