Why Am I So Hard on Myself? Understanding Self-Criticism and How It Forms
When the Mind Won’t Switch Off
You’re lying in bed and something seemingly small from earlier in the day comes back to you. Maybe it was an attempted joke in a work meeting, or you sent a message to a friend and they left you on read.
At the time it seemed minor, but now at 11pm, your mind starts replaying it.
Why did I say that?
They probably think I’m incompetent.
I should clarify with them tomorrow.
The more you think about it, the worse it feels. Your chest tightens, your stomach drops and the sleepiness you felt 20 minutes ago has been replaced by agitation and panic.
You might recognise that you’re overreacting, it was really just a minor thing and they probably don’t care about the little slip-up you made. You might try to talk yourself out of it, but the cycle keeps going.
This pattern is often described as overthinking. But this pattern isn’t only about distorted beliefs or logic, it is actually quite a bit deeper than that.
How Self-Criticism Often Begins
Patterns of harsh self-criticism often develop gradually through early relationships.
As children, we learn about ourselves largely through the reactions of the people around us. Developmental research shows that early caregiving is initially dominated by warmth, play and affection. As children become more mobile in the second year of life, caregivers naturally increase levels of guidance and reprimand to keep them safe (Schore, p.234).
This shift needs to happen because children need boundaries as they explore the world.
However, the way caregivers respond when a child crosses those boundaries matters.
If mistakes are met with patience and guidance, the child learns something like:
“I made a mistake, but I’m still okay.”
But when mistakes are met with harsh criticism, humiliation, rejection, or emotional withdrawal, the experience can feel very different. Repeated criticism from caregivers can lead children to internalise shame-based ways of evaluating themselves (Mills et al., 2015). Experiences of shame are also strongly associated with rumination and harsh self-evaluation later in life (Kim, Thibodeau & Jorgensen, 2011).
Children depend on caregivers for safety, belonging and survival. When criticism comes from someone they rely on, it carries emotional weight. The nervous system treats the moment as socially significant.
Developmental research suggests that repeated experiences of criticism can also shape how the nervous system regulates stress, making people more sensitive to social evaluation later in life.
Over time, children may begin to anticipate criticism before it happens. They become more alert to signs that they might have done something wrong.
Gradually, the external voice of criticism can become internal.
Instead of hearing judgement from a parent, teacher or authority figure, the person begins delivering it themselves, and the critic has moved inside.
Why Social Evaluation Matters So Much
For the brain, threats to belonging are not trivial. They are biologically significant.
In one study, people who were socially rejected showed activity in the same brain areas involved in physical pain (Eisenberger, Lieberman & Williams, 2003).
In other words, the brain processes social rejection using some of the same systems that detect physical danger.
From an evolutionary perspective this makes sense. For most of human history survival depended on remaining part of a social group. Exclusion could mean loss of protection, resources, and safety.
Because of this, the nervous system remains highly sensitive to signals that belonging may be at risk.
When the mind begins replaying a mistake or imagining how others may judge us, the brain may interpret that moment as a potential threat to social standing or connection.
What Happens in the Body During Self-Criticism
When we replay mistakes or imagine others judging us, the body can shift into a stress response.
When people feel judged or criticised, the body often shifts into a stress response. Cortisol increases and the sympathetic nervous system becomes more active (Dickerson & Kemeny, 2004).
Repetitive negative thinking also has measurable physiological effects. Studies show that rumination and worry are associated with elevated heart rate, blood pressure, cortisol, and reduced heart rate variability, indicating reduced autonomic flexibility (Ottaviani et al., 2016).
This means harsh self-criticism is not simply a thinking habit. It often activates the body’s threat system.
This is why thinking alone usually won’t break the cycle. Once a stress response is activated, our nervous system is mobilised to deal with a threat, and is scanning for danger. In order to help calm our mind down, it may be easier to start with calming our body.
Shame Is Often Hidden
Many people may assume they don’t have an issue with shame, because they can’t clearly feel it.
In reality shame is often implicit (Tangney & Dearing, 2002).
Instead of appearing as a clear thought like I feel ashamed, it tends to appear through reactions.
People may notice urges to:
withdraw from others
replay conversations repeatedly
avoid situations where they might be judged
criticise themselves harshly
become defensive or angry
These reactions often reflect a deeper concern about how one is perceived by others.
Regulation Can Change Our Experience
As the nervous system becomes less dominated by threat responses, patterns of harsh self-criticism often decrease, as the mind no longer needs to constantly scan for signs of failure or rejection.
Feelings of safety in relationships can reduce threat responses in the brain. In a well-known fMRI study, women anticipating an electric shock showed lower activation in threat-related brain regions when they held the hand of a trusted partner. The effect was strongest in participants who reported higher relationship quality (Coan, Schaefer & Davidson, 2006).
Other studies show that affectionate touch can also reduce cortisol responses to stress (Ditzen et al., 2007). Together, these findings illustrate a broader principle. Human nervous systems influence and regulate each other.
When the body experiences signals of safety through supportive relationships, the brain’s threat systems often become less reactive. Over time, repeated experiences of regulation and safety can reshape how the nervous system responds to stress.
Supportive relationships can reduce physiological stress responses and support more flexible regulation of the autonomic nervous system. This effect is often described as social buffering (Hostinar, Sullivan & Gunnar, 2014). Research on caregiver–child synchrony also shows that repeated experiences of attuned connection help develop more stable emotional and physiological regulation over time (Feldman, 2012).
Seeing the Pattern Differently
If you struggle with harsh self-criticism, it’s common to believe there’s something wrong with you.
When these patterns are understood in the context of earlier relationships, they often begin to make more sense.
If criticism, rejection, or unpredictability were part of your early environment, your system may have learned to monitor closely for signs of disapproval. Self-criticism can become a way of getting there first by anticipating what might go wrong before someone else points it out.
Seeing these reactions in this way does not remove responsibility for our actions or feelings. But it can soften some of the shame you carry about having these patterns in the first place.
How Therapy Can Help
These patterns are difficult to change alone because they are not just thoughts. They are tied to how your body responds, and to expectations shaped in earlier relationships.
In therapy, they often show up directly.
You might notice yourself monitoring what you’re saying, second-guessing, or feeling like you’ve said something wrong. At times, the critical voice becomes sharper when you feel exposed or uncertain.
Rather than trying to correct or challenge this, we pay attention to it as it happens.
Over time, having these moments met without judgement, withdrawal, or subtle shifts in the other person begins to matter. You don’t have to get it right. You don’t lose connection when something awkward or uncertain appears.
As this repeats, the pattern starts to change. What once felt immediate and convincing becomes more noticeable, and less total.
The aim isn’t to get rid of the inner critic. It’s to change the conditions that keep it active. When you’re not bracing for rejection as much, the pull to second-guess yourself begins to ease.
References:
Coan, J.A., Schaefer, H.S. and Davidson, R.J. (2006)
Lending a hand: Social regulation of the neural response to threat.
Psychological Science, 17(12), pp.1032–1039.
https://doi.org/10.1111/j.1467-9280.2006.01832.x
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Acute stressors and cortisol responses: A theoretical integration and synthesis of laboratory research.
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Effects of different kinds of couple interaction on cortisol and heart rate responses to stress in women.
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