Where Does Public Speaking Anxiety Come From?

She knows the material. She prepared properly. She even rehearsed the opening in the hotel bathroom mirror the night before while balancing a Pret sandwich in one hand and mild existential dread in the other. And yet the minute she is in front of an audience, the moment all eyes turn toward her in the meeting, something changes. Her heart rate spikes. Her mouth goes dry. Her mind starts buffering like weak airport WiFi.

The sentence she knew perfectly thirty seconds ago suddenly disappears into the abyss. So she starts talking faster. Then she’s rambling. Then over-explaining. Then mentally leaving her body while still somehow continuing to speak. The audience members are split between either desperately trying to keep up, or they’ve checked out completely because they’re confused and overwhelmed.

Afterwards, she replays the entire thing on a loop. Negative thoughts just pile up:

Why did I say it like that?

Why did I go blank?

Why couldn’t I think properly?

Do they all think I’m incompetent now?

And this is the part people rarely talk about. For many professionals, public speaking anxiety doesn’t just create nerves. That flight response? That stage fright? It creates a genuine crisis of self-trust.

Because when you repeatedly lose access to your thinking under pressure, it stops feeling like a speaking problem.

It starts feeling like proof that maybe you’re not actually as intelligent, articulate, or capable as everyone thinks you are. Which is particularly upsetting when you’ve spent fifteen years building a career and one badly-timed brain freeze during a leadership update suddenly has you questioning whether you should actually go and live in a cave.

So where does public speaking anxiety actually come from? (Settle in, I’m about to get verbose.)

Not from weakness.
Not from lack of intelligence.
Not necessarily from lack of preparation either.

Very often, public speaking anxiety comes from your body interpreting visibility, evaluation, pressure, or scrutiny as threat. And when the nervous system believes you’re under threat, it prioritises survival over eloquence. Which is deeply inconvenient when you’re trying to explain quarterly strategy to a boardroom full of people staring directly at your reddening, slightly sweaty face.

Most people describe public speaking anxiety as “being nervous.” That’s technically true. But it’s also a bit like describing a hurricane as “slightly windy.” Because public speaking anxiety can feel incredibly physical. The fear of public speaking can show up as any combination of the following:

• a racing heart
• shaking hands
• dry mouth
• nausea
• sweating
• voice wobbling
• shallow breathing
• tunnel vision
• mental blankness
• rambling
• difficulty finding words
• speaking too quickly
• feeling detached or unreal

And importantly, many people experience these symptoms despite knowing exactly what they want to say beforehand.  That’s the part that confuses and derails people. They’ll say:

“I knew this yesterday.”

“I literally just rehearsed this. Last night, too, in front of a mirror, even.”

“I’m fine in normal conversation in small groups. Why does this trip me up?”

“Why does accessing the words I prpped feel like swimming in treacle the moment people are watching me?”

Because public speaking anxiety is not simply about the inability to remember information. It’s about what happens to your nervous system when attention, evaluation, pressure, or perceived judgment enters the equation. The massive concern that your audience will collectively and swiftly develop negative views of you. And unfortunately, the human body is not especially interested in whether your equisitely designed PowerPoint presentation is important to your career progression. It just knows:

I’m in front of a group of people. Substantially, a large number of people. Lots of eyes on me. Potential social risk detected. Panic accordingly.

Public speaking anxiety usually comes from a combination of psychological, physiological, and social factors. But underneath all of them is one central theme:

The body perceives speaking situations as threatening. That threat can come from:

• fear of judgment, humiliation, rejection, making small mistakes publicly, losing status or credibility
• fear of conflict or scrutiny, or of repeating past failures
• past embarrassing experiences
• perfectionism
• pressure to perform well
• being challenged unexpectedly

For some people, the threat feels mild. Lucky them. For others, especially high-achieving professionals in visible roles, the threat can feel enormous. For a sizeable portion of society, it can turn into an extreme fear. Because the stakes genuinely matter.

If you’re pitching for funding, leading negotiations, presenting to senior leadership, speaking at an event, or handling difficult questions publicly, your nervous system may interpret that moment as:

If this goes badly, something important could be lost.

That “something” might be:

• approval
• respect
• reputation
• authority
• opportunity
• belonging
• perceived competence

And humans are deeply wired to care about those things. We are social creatures. Our nervous systems evolved long ago in environments where exclusion from the group was dangerous. It could even have been fatal.

So even though your presentation is objectively not a life-or-death situation, your body may still respond as though social survival is under threat. Which explains why your body reacts like you’re escaping an angry bear when in reality you’re just trying to update Tracey from finance on a marketing timeline. No offence to Tracey.

One of the biggest misconceptions about speech anxiety is the idea that confident speakers are simply better thinkers. They’re not. Often, they’re simply better able to stay regulated while thinking publicly. There’s a massive difference. Many highly intelligent people struggle during presentations, negotiations, leadership updates, or high-pressure conversations because pressure changes how the brain functions. When the nervous system detects threat, the body activates a stress response:

Heart rate increases.
Breathing changes.
Muscles tighten.
Attention narrows.

And crucially: Access to flexible thinking, memory retrieval, and language can become disrupted. Which is why people suddenly:

• forget points they absolutely knew
• lose their train of thought
• ramble in circles
• struggle to structure sentences
• over-explain unnecessarily
• blank mid-sentence
• speak far too quickly
• sound less articulate than they actually are

This is one reason people often say:

“I sound intelligent in writing but not when I speak.”

Or:

“I know what I think until someone challenges me directly.”

Because under pressure, your cognitive resources get redirected toward survival. Your body is prioritising protection and belonging, not elegant sentence structure. Again: deeply rude timing from the nervous system. But not uncommon.

A lot of public speaking advice focuses on confidence. But confidence is often downstream of something more fundamental: felt steadiness while being seen.

For many people, especially women in high-performance environments, speaking publicly carries layers of social meaning.

It’s not just:

“I’m giving a presentation.”

It’s:

“People are evaluating my intelligence.”

“If I mess this up, I’ll lose credibility.”

“If I sound uncertain, they’ll stop trusting me.”

“I need to prove I deserve to be here.”

And if someone becomes aggressive, dismissive, or challenging during the interaction? The nervous system often escalates further. Because now the body isn’t just managing visibility.

It’s managing perceived social danger. This is why many people can speak comfortably in low-pressure situations but struggle intensely in:

• negotiations
• presentations
• performance reviews
• leadership meetings
• pitching situations
• conference speaking
• interviews
• situations involving scrutiny or hierarchy

The issue is not necessarily speaking itself, but more what the nervous system believes is at risk while speaking.

This is where many people start feeling defeated. Because they’ve already tried the standard advice.

They’ve:

• rehearsed endlessly
• memorised scripts
• learned storytelling frameworks
• forced eye contact
• repeated cringeworthy flimsy affirmations to themselves
• tried “power posing” like a budget Superman
• taken presentation courses
• downloaded another communication acronym from LinkedIn

And some of these things can help. But many approaches still assume one crucial thing: That you’ll be able to access your thinking clearly once pressure hits.

And many people can’t. At least, not consistently. Which means no amount of communication frameworks matter if your nervous system has already hit the internal fire alarm. This is why people often leave speaking courses feeling:

“I technically know what to do… but I still can’t do it in the moment.”

Because information is not the same thing as ACTUAL regulation. You can know exactly how to structure a presentation and still completely lose access to its contents the moment a hostile audience member interrupts you halfway through slide six. And honestly, being told to “just breathe” while your body is spiralling can feel mildly insulting. Like handing someone a soggy cucumber sandwich during a house fire.

Take the Steady Speaker Quiz to uncover which nervous system patterns show up when attention turns toward you – and what helps you stay steady in real time.

This is why I take a body-first approach to public speaking. Not because content and delivery don’t matter. They do. But if the body is dysregulated enough, it becomes difficult to access the very thinking skills people are trying to improve. So instead of starting with performance techniques, I start with stabilisation. Because when the body becomes steadier, people often regain access to:

• language
• memory
• coherent thinking
• pacing
• flexibility
• presence

That doesn’t mean becoming perfectly calm. I’m not particularly interested in selling the fantasy of becoming some zen TED Talk robot who never feels nervous again. Nerves are normal. The goal is not emotional perfection. The goal is staying steady enough to think while speaking. That’s different. A body-first approach might involve:

• understanding your individual nervous system patterns
• noticing physical symptoms earlier
• changing breathing mechanics
• grounding physically before speaking
• regulating pace and tension
• reducing threat sensitivity gradually over time
• building recovery practices between speaking events

Because steadiness is not usually built through one magical “confidence hack.” It’s built through repetition, regulation, awareness, and nervous system training. Slightly less glamorous than social media would have you believe, but considerably more useful.

If you struggle with public speaking anxiety, the answer is probably not bullying yourself into “just being confident.” Here are a few more useful starting points.

1. Stop treating anxiety as proof of incompetence

Anxiety symptoms are not reliable indicators of intelligence or capability. Many highly competent people experience intense physiological activation while speaking. The symptoms feel convincing.

That doesn’t mean the story your brain creates about them is true.

2. Pay attention to your breathing patterns

Many people unknowingly hold their breath or breathe shallowly while speaking. This increases physiological arousal. Slower, more grounded breathing patterns can help reduce escalation. Not instantly. Not magically. But meaningfully over time.

3. Reduce performance perfectionism

A lot of speech anxiety worsens because people are trying to sound flawless. Ironically, this usually increases tension and cognitive overload. You do not need to deliver a perfect speech. You need to stay connected enough to communicate. Different goal.

4. Practise thinking publicly in smaller doses

Many people only expose themselves to pressure during very high-stakes situations. Instead, build tolerance gradually. Small meetings. Short updates. Low-stakes contributions. Practising recovering after losing your train of thought. Because the goal is not never feeling activation. The goal is learning you can stay with yourself through activation.

5. Build recovery into the process

People often treat public speaking as a single event. But nervous systems care about what happens before and after pressure. Recovery matters. So does sleep. So does regulation between speaking events. So does reducing constant hyper-vigilance. You are, regrettably, still a mammal.

If this feels painfully familiar, the issue may not be confidence. It may be what your body does under pressure. Take the Steady Speaker Quiz to uncover which nervous system patterns show up when attention turns toward you – and what helps you stay steady in real time.

Sometimes public speaking anxiety is situational and manageable with practice and nervous system work. That’s where I come in. Sometimes it overlaps more significantly with:

• social anxiety disorder
• panic attacks
• traumatic experiences
• chronic perfectionism
• broader anxiety disorders

That’s where I gracefully bow out. That is beyond the scope of my credentials. If speaking anxiety is severely impacting your career, wellbeing, relationships, or quality of life, professional support may help. Approaches like cognitive behavioral therapy (CBT), nervous system-informed coaching, and anxiety treatment can all be useful depending on the situation. There is no shame in needing support.

You do not get extra points for white-knuckling your way through every presentation while silently dissociating beside a conference room projector.

Most people think the goal of overcoming public speaking anxiety is about becoming more confident. But honestly? Confidence is unreliable. Some days you’ll feel it. Some days you won’t. Some days, your nervous system will decide a perfectly normal meeting is apparently a Victorian public execution. The more useful goal is this: Can you stay steady enough to access your thinking under pressure?

Can you remain connected enough to:

• remember your point
• respond flexibly
• tolerate attention
• recover if you lose your place
• continue speaking without spiralling into self-destruction afterwards

Because public speaking anxiety is rarely just about speaking. It’s about what happens when your body believes being seen is dangerous. And when people understand that, something important often shifts. They stop interpreting every symptom as evidence they’re fundamentally incapable. They stop obsessively searching for the perfect script, framework, or confidence trick. And they start building the thing that actually helps: steadiness. Not perfection. Not performance theatre. Not pretending not to care. Just enough steadiness to stay connected to themselves while they speak. And very often, that changes everything.

Is public speaking anxiety normal?

Yes. Public speaking anxiety is extremely common and can affect people across all experience levels, including highly capable professionals.

Why does my mind go blank during presentations?

Under pressure, the nervous system can disrupt access to memory, language, and flexible thinking. This is a physiological stress response, not necessarily a sign of incompetence.

Why does my voice shake when I speak?

Stress activation affects breathing, muscle tension, and adrenaline levels, all of which can influence vocal steadiness.

Is public speaking anxiety linked to social anxiety?

Sometimes. For some people, speech anxiety exists on its own. For others, it overlaps with broader social anxiety patterns or fear of evaluation.

Can public speaking anxiety improve?

Yes. Many people improve significantly when they focus not only on speaking techniques, but also on nervous system regulation, steadiness, and gradual exposure.

If this feels painfully familiar, the issue may not be confidence. It may be what your body does under pressure. Take the Steady Speaker Quiz to uncover which nervous system patterns show up when attention turns toward you – and what helps you stay steady in real time.

If this feels painfully familiar, the issue may not be confidence. It may be what your body does under pressure. Take the Steady Speaker Quiz to uncover which nervous system patterns show up when attention turns toward you – and what helps you stay steady in real time.