The Voice Inside Your Head: How Your Inner Voice Can Decide Whether You Succeed or Fail on Kokoda

9 Sep 2026 9:55 AM

 

The most important conversation on the Kokoda Track isn't the one you have with your trekking partner. It's the one you have with yourself.

After leading more than 140 Kokoda treks, I've learned something that continues to fascinate me.

Two people can arrive on the Kokoda Track with remarkably similar levels of fitness.

They can be the same age.

They can carry a similar pack.

They can complete the same training.

They can face the same heat, humidity, mountains and fatigue.

And yet one can finish the Track convinced they are capable of almost anything, while the other can begin believing they are not going to make it.

What creates that difference?

Sometimes it isn't their legs.

It's the voice inside their head.

The Invisible Battle on Kokoda

When people think about preparing for Kokoda, they usually think about physical training.

They run.

They walk.

They climb stairs.

They strengthen their legs.

They carry a backpack.

They improve their cardiovascular fitness.

All of that is important.

But after years of watching people on the Kokoda Track, I've become convinced that there is another form of preparation that is just as important:

learning how to manage the conversation you have with yourself.

Because somewhere between the bottom of a mountain and the top of it, the physical challenge can become psychological.

The voice starts.

"This is harder than I expected."

"I can't do this."

"I'm exhausted."

"Why did I agree to this?"

"Everyone else is coping better than me."

"I'm never going to get there."

And then something interesting happens.

The person doesn't necessarily become physically weaker.

Their interpretation of what is happening changes.

And that interpretation can change their behaviour.

Your Brain Doesn't Just Respond to the Experience. It Interprets It.

One of the most important principles I teach participants is that there is a difference between what is happening and what you tell yourself about what is happening.

Your legs may genuinely be tired.

Your breathing may genuinely be elevated.

The mountain may genuinely be steep.

But your brain then assigns meaning to those sensations.

You might interpret fatigue as:

"I'm getting stronger."

Or:

"I'm not capable of this."

The physical sensation may be almost identical.

The meaning is completely different.

And that meaning influences what happens next.

Do you keep moving?

Do you stop?

Do you ask for help?

Do you withdraw?

Do you become frustrated?

Do you encourage yourself?

Do you encourage somebody else?

This is where the inner voice becomes so powerful.

The Inner Voice Can Become a Self-Fulfilling Prophecy

I've seen this repeatedly on Kokoda.

A participant starts the day feeling good.

They are confident.

They're talking with the group.

They're enjoying the experience.

Then the terrain gets harder.

The fatigue starts accumulating.

Perhaps they haven't slept well.

Perhaps their nutrition hasn't been ideal.

Perhaps they begin comparing themselves with stronger members of the group.

And the internal dialogue changes.

"I'm struggling."

becomes:

"I'm not fit enough."

which becomes:

"I'm the weakest person here."

which becomes:

"I'm holding everyone back."

which can eventually become:

"I can't do this."

Now the person isn't simply experiencing physical fatigue.

They are experiencing psychological defeat.

The body is tired.

But the mind has started predicting failure.

And when the brain begins to expect failure, behaviour can follow.

A Kokoda Case Study: "I Can't Do This"

One of the most powerful examples I have witnessed involved a participant who arrived on Kokoda reasonably well prepared.

There was nothing about their initial physical condition that suggested they couldn't complete the Track.

But relatively early in the trek, the terrain became increasingly difficult.

The climbs were longer.

The heat was oppressive.

The body was becoming fatigued.

And the participant began falling behind.

Eventually they said words I've heard many times over the years:

"I can't do this."

Now, that sentence sounds relatively harmless.

But I knew it was important.

Because the statement wasn't:

"This is hard."

It wasn't:

"I'm tired."

It wasn't:

"I need a break."

It was:

"I can't do this."

That is an identity statement.

It changes the challenge from something the person is experiencing into something they believe they are incapable of overcoming.

So rather than arguing with them, I changed the conversation.

We Changed the Question

I didn't ask:

"Can you finish Kokoda?"

Because at that moment the answer felt overwhelming.

Instead, I asked:

"Can you walk to the next point?"

The answer was:

"Yes."

So we walked.

Then I asked:

"Can you get to the next one?"

Again:

"Yes."

So we did.

Then another.

And another.

The mountain hadn't changed.

The temperature hadn't changed.

Their legs hadn't suddenly become stronger.

But the psychological task had changed.

Instead of thinking about the entire Track, we narrowed the focus to the next achievable action.

We Also Changed the Language

We then began challenging the language being used internally.

Instead of:

"I can't do this."

We introduced:

"This is hard, but I can keep moving."

Instead of:

"I'm not fit enough."

We used:

"My body is adapting."

Instead of:

"I'm never going to get there."

We used:

"I only need to focus on the next section."

Instead of:

"Everyone is ahead of me."

We used:

"I am walking at my pace."

These weren't positive affirmations designed to pretend everything was wonderful.

That is an important distinction.

The participant was genuinely tired.

The mountain genuinely was difficult.

The discomfort was real.

We weren't trying to deny reality.

We were changing the interpretation of reality.

From "I Can't" to "I Can"

Something began to happen.

The participant started using the new language independently.

They began catching themselves when the old internal dialogue appeared.

"I can't do this..."

Pause.

"No. This is hard, but I can keep moving."

That tiny interruption became important.

Because the objective wasn't to eliminate negative thoughts.

That's unrealistic.

The objective was to stop allowing an automatic thought to become an automatic behaviour.

This is one of the most important psychological skills we can develop.

A thought is not an instruction.

You can notice it.

Question it.

Reframe it.

And choose what you do next.

 

The Brain Learns Through Repetition

This is where the idea of "reprogramming" becomes useful — provided we understand what we actually mean.

We aren't literally deleting a thought from the brain.

We're creating and strengthening different patterns of responding.

The more often a person notices an unhelpful thought, challenges it and replaces it with a more useful response, the more familiar that alternative response can become.

It's similar to developing a physical skill.

You don't become better at something because you do it once.

You practise it.

You repeat it.

You reinforce it.

And eventually the response becomes more accessible.

The same principle can be applied to self-talk.

The Kokoda Mental Reprogramming Process

I've developed a simple process I use when working with participants.

1. NOTICE

Become aware of the internal conversation.

What are you actually saying to yourself?

Not what you think you're saying.

What are you actually saying?

2. NAME

Give the thought a name.

"That's my 'I can't do this' voice."

This creates psychological distance.

You are no longer simply the thought.

You are the person observing the thought.

3. QUESTION

Ask:

Is this thought completely true?

What evidence supports it?

What evidence contradicts it?

Is there another way of interpreting what is happening?

4. REFRAME

Replace the unhelpful thought with something realistic and useful.

Not:

"I'm amazing and this is easy."

But:

"This is difficult, and I have already overcome difficult things."

The new thought needs to be credible.

5. FOCUS

Bring attention back to what you can control.

Not the entire mountain.

Not tomorrow.

Not yesterday.

The next step.

6. REPEAT

Every time the old thought returns, repeat the process.

Notice.

Name.

Question.

Reframe.

Focus.

Repeat.

That's where the real change occurs.

What Happened to Our Participant?

The transformation wasn't instantaneous.

There were still difficult moments.

There were still periods of fatigue.

There were still moments when the old voice returned.

But something fundamental had changed.

Instead of automatically believing the thought, the participant had learned to challenge it.

And gradually, confidence began replacing fear.

Eventually they completed the Track.

But for me, that wasn't the most important outcome.

The most important moment came afterwards.

They realised that the biggest obstacle hadn't necessarily been the mountain.

It had been the story they were telling themselves about their ability to climb it.

And that realisation has applications far beyond Kokoda.

 

The Mountain Comes Home With You

This is why I believe Kokoda can be such a powerful personal development experience.

Because the lessons don't have to stay in Papua New Guinea.

Consider what happens when the same internal voice appears in everyday life.

"I can't have that conversation."

"I'm not good enough for that promotion."

"I'll never change."

"I'm too old."

"I've failed before, so I'll probably fail again."

"There's no point trying."

The circumstances are different.

But the psychological pattern can be remarkably similar.

Kokoda gives us an opportunity to recognise that pattern in an environment where it becomes impossible to ignore.

 

Your Inner Voice Can Become Your Coach — or Your Critic

We all have an internal dialogue.

The question isn't whether you have one.

The question is:

Who is in charge of it?

An unchecked inner voice can become a relentless critic.

It can magnify discomfort.

Predict failure.

Create comparison.

Undermine confidence.

And turn temporary difficulty into a permanent conclusion about yourself.

But a trained inner voice can become something entirely different.

It can become a coach.

A reminder.

A source of perspective.

A way of maintaining focus.

A mechanism for regulating emotion.

A means of reconnecting with your values.

And ultimately:

a source of resilience.

The Real Kokoda Challenge

People often ask me what the hardest part of Kokoda is.

Is it the mountains?

The heat?

The mud?

The humidity?

The long days?

The lack of sleep?

The answer is different for everyone.

But after more than 140 treks, I've seen one recurring battle.

The battle between what the body is experiencing and what the mind says that experience means.

The body says:

"I'm tired."

The inner critic says:

"You're failing."

The body says:

"This hurts."

The inner critic says:

"You can't do it."

The body says:

"This is difficult."

The trained mind says:

"Then take the next step."

That difference can change everything.

You Don't Have to Believe Every Thought You Have

Perhaps one of the greatest lessons Kokoda can teach us is remarkably simple:

You are not your thoughts.

You can have a thought without obeying it.

You can feel fear without retreating.

You can feel exhausted without deciding you're defeated.

You can experience discomfort without interpreting it as failure.

And you can be uncertain while continuing forward.

That's not pretending to be strong.

That's developing psychological flexibility.

Preparing the Mind for Kokoda

This is why I believe Kokoda preparation should begin months before participants arrive in Papua New Guinea.

Physical preparation is essential.

But so is learning how to recognise and manage the psychological patterns that emerge under pressure.

Before the trek, participants can begin identifying:

• their habitual negative self-talk
• their triggers
• their fears
• their limiting beliefs
• their responses to discomfort
• their comparison patterns
• their motivation strategies
• their personal strengths.

Then Kokoda becomes the environment where those skills are tested.

The Track becomes the laboratory.

The mountain becomes the challenge.

And the inner voice becomes part of the training.

The Goal Isn't to Create Positive Thinkers

This is an important distinction.

I'm not interested in teaching people to walk around Kokoda telling themselves everything is wonderful.

That's not resilience.

Resilience isn't:

"Everything is easy."

Resilience is:

"This is hard, and I can respond effectively."

It is realistic.

It acknowledges difficulty.

It accepts discomfort.

But it refuses to let difficulty automatically determine the outcome.

 

What Kokoda Can Teach You About Yourself

The Track has a remarkable way of stripping away distractions.

You don't have your normal routine.

You don't have your normal comforts.

You don't have the same control over your environment.

Eventually, you are left with something very simple:

Your body.

Your thoughts.

Your emotions.

Your decisions.

Your behaviour.

And the people walking beside you.

That makes Kokoda a powerful environment for discovering how you actually respond when life becomes difficult.

Your Inner Voice Is Trainable

The most encouraging part of this story is that your internal dialogue isn't necessarily fixed.

It can be influenced.

It can be challenged.

It can be practised.

It can become more constructive.

And it can become more aligned with the person you want to be.

The same way we train the legs to climb the Kokoda mountains, we can train the mind to respond differently when the mountain gets hard.

You don't just train your body to walk Kokoda.

You train your mind to keep going.

The Final Lesson

At the end of a Kokoda trek, people often remember the mountains.

They remember the mud.

They remember the heat.

They remember the people they walked with.

They remember the emotional moments.

But I hope they also remember something else.

The voice inside their head.

Because that voice will come home with them.

It will be there when they face their next challenge.

Their next difficult conversation.

Their next setback.

Their next opportunity.

Their next mountain.

And perhaps the most important lesson Kokoda can teach is this:

You don't always get to choose the mountain in front of you. But you can learn to choose the voice that tells you how to climb it.

That is where transformation begins.

Ready to prepare your mind as well as your body for Kokoda?

At Our Spirit, Kokoda preparation goes beyond physical fitness. Our programs integrate physical preparation, counselling, neuroscience-informed coaching, personal development and experiential learning to help participants develop the capacity to meet challenge with greater confidence and self-awareness.

Because Kokoda isn't just a test of your legs.

It's a conversation with yourself.

And learning to change that conversation may be one of the most valuable things you bring home.