When Your Old Maps Come Back
What illness taught me about the brain under low capacity — and what actually helps.
It was day four of not feeling well, the worse over, and what remained was that low-grade draining kind of not-well where everything feels heavy and hard.
I wasn’t moving fast. I wasn’t thinking clearly. And somewhere in the middle of that, I noticed something that stopped me: old stories were surfacing. Not new ones. Not the ones I’ve worked hard to build over years of this work. The old ones. The ones I know aren’t true. The ones I thought I’d moved past.
And I found myself asking — have I actually updated anything? Or have I just learned how to choose differently when I have enough capacity to do so?
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Here’s what the science says about what’s happening in those moments.
Your brain is a prediction machine. Its primary job isn’t accuracy — it’s
efficiency. When your physiological resources are low, whether through illness, exhaustion, or sustained stress, your brain defaults to its most well-worn, energy-efficient routes. It runs the patterns it knows best. The ones built earliest. The ones with the deepest grooves.
THE SCIENCE BEHIND THIS
This is well-established in the predictive processing framework — most associated with Karl Friston and Lisa Feldman Barrett. When metabolic load is high, the brain conserves resources by favouring high-probability predictions over generating new ones. Meanwhile, Stephen Porges’ Polyvagal Theory describes what you might feel as ‘shutdown’ or ‘collapse’ as the dorsal vagal pathway activates— a protective, energy-conserving response that reduces access to higher cortical functions and the flexible thinking they enable.
So the old map showing up isn’t a sign that you’ve failed to change. It’s a sign that your system is doing exactly what a system under load is designed to do. It is being efficient. It is surviving.
“The old map showing up isn’t a sign you’ve failed. It’s a sign your system is doing exactly what a system under load is designed to do.”
But here’s the part I find most useful — and most reassuring. The new learning isn’t gone. Research in memory reconsolidation shows that updated neural patterns, even ones built through careful, sustained work, can be temporarily less accessible when the system is under pressure. Less accessible is not the same as erased. The work you’ve done is still there. The brain is just not routing through it right now, because routing through it is expensive.
The question I was sitting with — whether we ever truly update our maps, or just learn to choose new ones — has a more nuanced answer than yes or no. Both are true, depending on what resources you have available in that moment.
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So what do you actually do when you notice it happening?
Notice and name it — out loud if you can
Not ‘I’m spiralling’ or ‘here I go again.’ Something more precise: ‘This is an old pattern. My system is low. This is what brains do under load.’ That act of naming — what I call Notice and Name — is itself a gentle re-engagement with the prefrontal cortex. You’re not demanding full mobilisation. You’re just creating a small moment of distance between you and the pattern.
Don’t try to navigate to the new map
This is counterintuitive but important. Attempting to actively run a new pattern — to override the old story, to reason your way out, to perform the version of yourself you’ve worked to build — requires exactly the prefrontal engagement that a shutdown state suppresses. Pushing harder often makes it worse. The most biologically honest thing you can do in that moment is not redirect. It’s recognise.
Address the capacity deficit first
Rest. Eat. Reduce stimulus. Sleep if you can. This isn’t giving up — it’s restoring the very conditions under which your newer, more carefully constructed maps become accessible again. Capacity before strategy isn’t just a professional principle. It applies here, in this quiet, ordinary, uncomfortable moment of being under the weather and not quite yourself.
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By day five I was starting to feel more like myself. The old stories had quietened. Not because I’d argued my way out of them, or because I’d done anything particularly clever. Mostly because I’d slept, eaten properly, and stopped asking my nervous system to perform while it was trying to recover.
The maps were still there. All of them — old and new. The brain just needed enough resource to choose which ones to run.
That distinction matters. It means the work you’ve done on yourself is not fragile. It’s not undone by a bad week or a bout of illness or a moment where the old voice is the loudest one in the room. It just needs capacity to be available. And sometimes, the most important thing you can do is give your system the conditions to find it again.
Andrea Edmondson works at the intersection of neuroscience and leadership development. Her framework, Capacity Before Strategy, is the foundation of her keynotes, leadership and coaching programmes.