Why Do I Feel Like a Kid Again When I Set Boundaries with My Parents?
You might be a capable adult in most areas of your life.
You manage work.
You make thoughtful decisions.
You pay bills.
You take care of others.
But the moment you try to set a boundary with your parent, something strange happens.
You suddenly feel…
small
anxious
guilty
frozen
like you’re about to get in trouble
Maybe you rehearsed what you were going to say beforehand:
“I’m not available for that.”
“That comment hurts.”
“If you keep speaking to me that way, I’m going to leave.”
But when you’re actually standing in front of them, your body reacts differently than you expected.
You might freeze.
You might start over-explaining.
You might give in.
And later, you drive home thinking:
Why did I react like that?
I’m an adult. Why did I suddenly feel like a child again?
If this happens to you, you are not the only who experience this.
Your nervous system is doing exactly what it learned to do a long time ago.
And if you grew up with emotionally immature parents, your nervous system may have been shaped around survival rather than safety.
Let’s talk about why this happens.
Jane I-Chen Liu, MA, LMHC, SEP™ is a somatic trauma therapist in Lynnwood, Washington who specializes in helping adults heal from trauma and Complex Post-Traumatic Stress Disorder. Her work integrates evidence-based approaches including EMDR, IFS, and SE to support deep, nervous-system-level healing.
When You Try to Set a Boundary, Your Nervous System May Remember Childhood
As children, we are completely dependent on our caregivers.
We rely on them for food, shelter, emotional connection, and safety. Because of this, our nervous system organizes itself around one core question:
“How do I stay connected to the people I depend on?”
When caregivers are emotionally mature, children gradually learn that relationships can hold honesty, repair, and healthy limits.
But when caregivers are emotionally immature, unpredictable, dismissive, or easily overwhelmed, children often have to adapt in order to maintain connection.
Over time, your body learns certain strategies that keep the relationship intact.
These strategies were never conscious choices. They were automatic nervous system responses.
This is something we understand more clearly through Polyvagal Theory, developed by neuroscientist Stephen Porges.
According to this theory, the nervous system is constantly scanning the environment for cues of safety or danger — a process called neuroception.
For many children with emotionally immature parents, the nervous system learns that connection can feel unstable. As a result, it develops survival strategies to protect that connection.
Three Survival Strategies Children Often Develop
These patterns often follow us into adulthood — especially in interactions with the same parents.
1. The Fawn Response: Appeasing to Stay Safe
Many children learn that the safest option is to keep the parent happy.
As adults, this can look like:
over-explaining your boundaries
people-pleasing
taking responsibility for other people’s emotions
abandoning your own needs
softening your words so no one gets upset
Your body may have learned something like:
“If I upset them, I might lose connection. If I lose connection, I’m not safe.”
So even when you know logically that your needs matter, your body may still prioritize keeping the peace.
2. The Fight Response: Anger as Protection
Other children cope by becoming defensive.
You might notice that around your parent you:
snap quickly
feel instantly reactive
get flooded during conflict
feel like you have to defend yourself constantly
Your nervous system learned:
“If I don’t protect myself, I’ll get hurt.”
This response often comes from years of feeling misunderstood, criticized, or emotionally unsafe.
3. The Freeze Response: Shutting Down
For many children, neither pleasing nor fighting felt safe enough.
So the body shut down.
As an adult, this might look like:
going blank during difficult conversations
feeling small or voiceless
dissociating
agreeing in the moment and regretting it later
Your nervous system learned:
“It’s safer if I disappear.”
Why Boundaries Can Feel So Dangerous
Setting a boundary with a healthy, emotionally regulated person might feel uncomfortable.
But setting a boundary with an emotionally immature parent can feel deeply threatening to the nervous system.
Why?
Because your body may still associate:
Disapproval → rejection
Rejection → abandonment
Abandonment → danger
Even if you now live in a different city, have your own career, and know logically that you are safe, your nervous system may still react as if you are the child who once depended on them.
Your body remembers what your mind has moved past.
And if your parent historically responded to boundaries with things like:
guilt (“After everything I’ve done for you…”)
anger
silent treatment
playing the victim
withdrawing affection
then your nervous system likely learned a powerful lesson:
Boundaries lead to relational rupture.
Of course your body reacts strongly.
It learned that long before you had words for it.
What Happens in Your Body in These Moments
Polyvagal theory describes three core nervous system states.
🟢 Ventral Vagal —
Safety and Connection
When you are in this state, you feel grounded and clear.
This is where healthy boundaries live. You can calmly say:
“I’m not available for that.”
“That doesn’t work for me.”
🟠 Sympathetic — Fight or Flight
Here your nervous system is preparing for danger.
You might feel anxious, angry, defensive, or overwhelmed.
Boundaries might come out sharper than you intended.
🔵 Dorsal Vagal — Shutdown
In this state the body collapses.
You may feel numb, frozen, or unable to find your words.
This is when the boundary you practiced disappears completely.
Many people experience something like this:
You plan your boundary when you feel calm.
Then the conversation begins and your parent says something triggering.
Your nervous system shifts into protection.
And later you feel ashamed for not saying what you wanted to say.
This is not a character flaw.
It is autonomic conditioning.
Building the Capacity to Set Boundaries
Because these patterns live in the nervous system, insight alone often isn’t enough.
Your body needs new experiences of safety.
Here are a few ways to begin.
1. Practice Boundaries in Safer Relationships
Your nervous system learns through experience.
Instead of starting with your most triggering relationship, try practicing boundaries with someone safer.
A friend.
A partner.
A coworker.
You might say something small like:
“I’d actually prefer to meet at 3 instead of 2.”
Then notice what happens in your body.
Does your heart race?
Do you feel guilty?
Now observe the outcome.
If nothing catastrophic happens, your nervous system begins to update its expectations.
2. Regulate Your Body Before the Conversation
Boundaries land differently when your nervous system feels safer.
Before a difficult interaction, try:
feeling your feet on the ground
slowing down your exhale
gently looking around the room
placing a hand on your chest
These small actions help your nervous system move toward regulation.
3. Keep Your Boundary Short
Emotionally immature parents often pull conversations into long debates.
But boundaries are not negotiations.
Practice simple statements like:
“I’m not available for that.”
“That doesn’t work for me.”
“I’m going to step away now.”
Over-explaining is often a fawn response trying to keep the relationship smooth.
4. Expect Emotional Backlash in Your Body
After setting a boundary, you might feel:
guilt
anxiety
shame
the urge to go back and fix things
This does not mean you did something wrong.
It means your nervous system is adjusting to a new pattern.
Try to stay with yourself during that discomfort.
5. Grieve the Parent You Wish You Had
One of the hardest parts of healing is accepting that emotionally immature parents often cannot meet us in the ways we long for.
They may not respond with empathy.
They may not take responsibility.
They may not change.
Boundaries may not transform them.
But they can transform your relationship with yourself.
And often beneath the fear of setting boundaries is a deep grief:
I wish you could understand me.
I wish you could meet me.
That grief deserves compassion.
The Deeper Work: Helping the Nervous System Feel Safe Again
When you were a child, connection with your parents was tied to survival.
Now you are an adult.
You can survive someone being upset with you.
You can survive disapproval.
But your nervous system may need support and repetition to truly believe that.
Trauma therapies such as
Eye Movement Desensitization and Reprocessing (EMDR),
Internal Family Systems (IFS), and
Somatic Experiencing (SE)
can help the body process the experiences that shaped these patterns.
As the nervous system begins to feel safer, something important changes.
Setting a boundary stops feeling like a threat.
It begins to feel like self-respect and self-trust.
The Real Goal of Boundaries
Boundaries are not about becoming harsh or cutting people off.
They are about learning to stay connected to yourself.
Even if someone else becomes upset.
Even if someone else withdraws.
Even if someone else cannot meet you where you are.
When you can stay with yourself in those moments, your nervous system slowly learns something new:
“I am safe now.”
And that is where real healing begins.
If You're Ready to Heal the Deeper Patterns
If this experience feels familiar to you — feeling like a child again when interacting with your parents, struggling to set boundaries, or feeling overwhelmed by guilt and anxiety — you are not alone.
Many adults who grew up with emotionally immature or unpredictable caregivers carry nervous system patterns shaped by earlier experiences. These patterns can show up in relationships, self-worth, emotional regulation, and the ability to advocate for your needs.
The good news is that these patterns can change. (And I’ve seen it many times!)
With the right support, your nervous system can learn that it is safe to stay connected to yourself while also being in relationship with others.
In my therapy practice, I specialize in helping adults heal from Complex Post-Traumatic Stress Disorder (CPTSD) and Post-Traumatic Stress Disorder (PTSD), particularly when those experiences are rooted in childhood relational trauma.
My approach integrates trauma-focused therapies such as
Eye Movement Desensitization and Reprocessing,
Internal Family Systems, and
Somatic Experiencing to help the nervous system process experiences that talking alone often cannot resolve.
I work with adults who are ready to move beyond simply coping and begin deep healing of long-standing trauma patterns.
I provide therapy for individuals who live in Washington, and I also work with clients who are willing to travel for in-person sessions at my office in Lynnwood, WA.
If you’re curious about working together, you are welcome to reach out to learn more about my approach and see whether it feels like a good fit. You can check out my website here.
