From inner critic to inner coach

I need you to stop what you are doing and read this sentence.

Scientists just officially reframed “mum brain” as a period of cognitive enhancement.

Did you get that? Functionally adaptive cognitive enhancement. Not fog. Not failure. Not your brain falling apart at the exact moment you need it most. Enhancement. The scientific community has officially, on the record, in a journal, said that what is happening in your head right now is an upgrade.

The reframe that changes everything

A peer-reviewed paper published in the Journal of Health Psychology in 2025 (Ettinger and Geller) formally reframed mum brain as a period of functionally adaptive cognitive enhancement, and concluded that shifting this narrative reduces negative self-evaluation and improves maternal mental health outcomes.^[1]

The 2025 paper does two things. It names the biology: the forgetfulness, the fog, the mental overwhelm are not signs of decline but evidence of a brain actively upgrading itself. The disruption is the upgrade. And it names the mechanism by which that biology becomes lived experience: what you do with the upgrade matters enormously.

For the underlying phenomenology of mum brain, what the walk on the pavement feels like from the inside, read Mum brain: is it real, how long does it last, and what actually happens. This post is about what to do about the voice.

What this has to do with your baby

I want to be honest here, because I think you can handle the truth and because you deserve it more than you deserve comfort that is not real.

The story you tell yourself about yourself as a mother is not a private matter. It does not stay inside your head. It lives in your nervous system, in your cortisol levels, in the quality of your presence in the room with your baby. And your baby, this brand-new human whose entire sense of safety and self is being built in real time from the cues you give, is reading all of it.

Research published in Nature Mental Health in 2024 found that children of mothers who reported greater positive mental health showed measurably larger hippocampi (a brain region critical for learning and memory) along with altered functional connectivity across emotional regulation networks.^[2]

A 2025 review in Frontiers in Psychology confirmed that maternal psychological states are closely associated with infant behavioural outcomes and represent key determinants of early neurodevelopment.^[3]

I am not sharing this to frighten you. I am sharing it because I believe you are a high-performing woman who makes better decisions with full information than with softened half-truths.

The voice. You know the one.

Let us name it. Because it has a very specific sound, and if you have been in early motherhood, you have heard it. Possibly today. Possibly in the last hour.

That voice. The one that narrates your worst moments. The one that turns a hard afternoon into evidence of your fundamental inadequacy as a mother, a woman, a human being.

Here is what I need you to understand about that voice. It is not the truth. It is not even a fair assessment. It is your brain, a brain undergoing one of the most significant neurological transitions of your adult life, running an outdated programme in the middle of a major systems upgrade.

The inner coach is not toxic positivity

This is not about pretending the hard moments are not hard, or performing gratitude through gritted teeth. This is about accuracy. The inner critic is not more honest than the inner coach. It is just louder, and it has had more practice.

The inner coach is not naive. She does not pretend that screaming at 3am is fine, or that the relentlessness of early motherhood is a joy-fest. She tells the truth and the full truth, not just the worst version of it.

She says. This is hard because you are doing something hard. Not. This is hard because you are failing.

She says. You are in the middle of the goo. Brain rewiring. Identity rebuilding. Not. This is who you are now. This is the ceiling.

She says. The fact that you care this much about getting it right is already evidence of how extraordinary you are.

Why this window matters

Your brain is in a window of massively increased neuroplasticity right now. The same kind of large-scale rewiring last seen in adolescence.^[4] Neuroplastic changes during this period are predominantly observed in areas important for social cognition. The medial frontal cortex. The anterior cingulate cortex. The regions that govern how you read other people, what you care about, and what you build your sense of self around.

The neuroplasticity of matrescence means the brain is changeable. Right now, in this window of maximum malleability, the thoughts you repeat most often are the pathways being reinforced. The inner critic, rehearsed daily, becomes structurally embedded. And the inner coach, patient, accurate, grounded, can be built in exactly the same way.

The question is not whether your brain is changing. It is. The question is what you are building into it.

Start there. Start now.

Science has done something remarkable. It has handed us a new story. Mum brain is not a deficit. It is an enhancement in progress. The fogginess, the lost words, the moments of overwhelm are not signs of a woman falling behind. They are the price of admission to a profound neurological expansion that makes you more empathic, more socially intelligent, more attuned to the emotional world around you than you were before.

You are not less than the woman you were before you had a baby. You are mid-upgrade. The installation is loud and disorienting and sometimes makes you want to cry in the shower. That is what installation feels like.

And the voice in your head. The one that has been telling you that you are bad at this, that you should be managing better, that other women have something you do not. That voice is running on an old programme. One that was never accurate. One that you now have the neuroscience, the language, and the full permission to update.

Your brain is being upgraded. Your child is watching you learn how to be you. And the most powerful thing you can model for them, the thing that will shape their own inner voice for the rest of their life, is a woman who speaks to herself with the same accuracy, courage, and compassion that she would offer to anyone she loves.

Start there. Start now. The window is wide open.