You’re Doing Better… So Why Are Old Insecurities Coming Back?

30 Mar

Woman sitting on sand dunes in a reflective moment, representing personal growth, identity shift, and overcoming old insecurities.

During personal growth or an identity shift, it’s actually quite common for old insecurities and self-doubt to come back, often at the exact moment you start to feel like things are shifting.

You can be feeling steady, noticing real change in yourself… and then, almost out of nowhere, an old insecurity rises up again.

Maybe it’s a thought you haven’t had in a while.

Or a familiar doubt that feels surprisingly close.

Or even a reaction that feels like it belongs to a past version of you.

And in that moment, it can feel confusing, and also a little disheartening, as though you’ve somehow slipped back into something you were trying to move beyond.

So let’s go through what is actually happening here, because there’s a very real psychological, biological, and nervous system explanation for it. And once you understand it, you can start to change the way you respond to these moments.

The Mind Prefers What It Recognises

It’s not always obvious, but it is incredibly important to understand this part.

Your brain is wired for predictability.

It leans toward what it recognises, what feels familiar, what it has seen and repeated before.

Expansion can happen, but familiarity is what it naturally gravitates toward.

So what this means is that over time, your brain builds an internal reference point for who you are. And that reference point forms through long-term repetition.

If you’ve spent years carrying a certain level of self-doubt, second-guessing yourself, or feeling like you need to prove your worth, those patterns start to feel normal. They become familiar ways of thinking and familiar ways of responding.

And the mind tends to treat what’s familiar as what’s true.

Now, when you begin to update your beliefs and clean up your thoughts, you start to shift your identity. You’re no longer thinking, responding, or showing up in the same way you always have.

There’s now a gap between who you’ve been rehearsing and who you’re becoming.

Inside your brain, that gap can create a kind of tension. And the mind, quite naturally, tries to resolve that tension by pulling you back toward what it already recognises, what feels familiar.

So when an old insecurity shows up, it’s not necessarily because it’s accurate.

It’s often because it’s known.

Why Old Patterns Still Show Up (Even When You’re Changing)

So let me give you an example, because this is where it really starts to make sense.

Imagine you’ve been working on speaking up more in meetings.

You’re not just hoping it will happen, you’ve actually been approaching it differently. Maybe you’ve been looking at the agenda beforehand and thinking about where you could contribute. You might rehearse a few points in your mind, or even jot something down so you feel more prepared going in.

And then you do it.

You speak up. You share an idea. You notice that people respond well, or at the very least, nothing goes wrong. You walk away thinking, “That was actually okay.”

That’s new evidence. And your brain is starting to take that in.

But then one day, you’re in a room with more senior people, or the stakes feel a little higher, and suddenly that old thought appears:

“What if I say something wrong?”

“What if they realise I don’t actually know enough?”

It feels immediate, real, and completely convincing.

And it can seem like it came out of nowhere.

But the thing is, it hasn’t.

The Brain Is Still Rewiring (Neuroplasticity and Familiarity)

Every thought you’ve repeated over time has created a neural pathway in your brain.

Each time you think the same thought, there’s an electrical signal that travels along that pathway. And the more often that signal travels that same route, the easier it becomes for your brain to send it again.

Over time, that pathway becomes quicker, more automatic, and more efficient. Not because it’s true, but simply because it’s been used so many times.

It becomes familiar.

And because your brain is wired for familiarity, it starts to favour that pathway. It becomes the default route your mind goes down, especially when you’re under pressure or in situations that matter to you.

Now, when you begin changing how you think and respond during personal growth or an identity shift, you’re not deleting the old pathways. You’re building new ones alongside them.

But those newer pathways are still forming. They haven’t been used as often yet.

So in moments where something feels important or slightly uncomfortable, your brain may briefly return to the older pathway, because it’s quicker and more established.

It means your brain is still reorganising.

This is what neuroplasticity looks like in real life. Not a clean break, but a gradual shift in what becomes your default over time.

Your Nervous System Is Trying to Keep You Safe

Now let’s bring the nervous system into this, because this is often the part that gets missed.

Your nervous system is always scanning, quietly in the background, asking one simple question:

“Am I safe?”

But here’s the thing to remember

Safety, to your system, doesn’t always mean what’s best for you.

It usually means what’s familiar.

So if you’ve spent a long time operating in a certain way, maybe being cautious, holding back, second-guessing yourself, or staying slightly guarded, your system learns:

“This is how we stay safe.”

Now, when you begin to grow, when you start showing up differently, speaking up more, trusting yourself more, allowing yourself to be seen, something shifts.

From the outside, it looks like progress.

But to your nervous system, it can feel unfamiliar.

And unfamiliar, in the body, can feel like risk.

So what happens?

You might notice a tightening in your body or your breathing changes. There’s a sense of urgency or your thoughts begin to speed up. You start second-guessing, replaying, overthinking.

If you compare that to how you felt just before, when you were more grounded and thinking clearly, it’s a very different internal experience.

What’s happening is that your body has shifted into a familiar state.

And once that state is activated, your brain brings in the thoughts that match it.

The feeling comes first.

Then the thoughts follow.

Why It Can Feel Like It Comes Out of Nowhere

When you look closely, these moments aren’t random.

They tend to show up when you’re stepping into visibility, doing something that matters to you, being seen, being evaluated, or stretching yourself in some way.

They often appear right at the edge of your next level.

So of course they feel intense.

You’re meeting an old pattern in a new situation, from a different version of yourself.

A Different Way to Understand What’s Happening

Instead of seeing these moments as setbacks, you can start to see them as part of the process.

Something is being reorganised.

Sometimes it’s a pattern that hasn’t fully settled yet, or your nervous system adjusting to a new level of safety. At other times, it’s your brain offering you an old route, even though you now have the capacity to respond differently.

So instead of asking, “Why is this happening again?” you might start to ask something a little more useful:

“What is this moment asking of me right now?”

Maybe it’s asking you to stay present instead of overthinking or to trust what you already know. Maybe it’s asking you to remain steady, even when something feels slightly uncomfortable.

When you look at it this way, the moment stops feeling like a setback… and starts becoming something you can actually work with.

What Actually Changes Your Identity

It’s not so much about getting rid of these thoughts completely. It’s more about what you do when they show up.

Because if you get pulled into them, if you follow them and start building on them, your brain strengthens that familiar pathway again.

But if you’re able to create even a small amount of space, even just a pause, something different starts to happen.

You interrupt the pattern.

And that’s where change begins.

What To Do When Old Insecurities Come Up

When old insecurities come up, the first thing to do is simply notice it.

You might say to yourself, “This feels like an old pattern.”

That alone creates a small but important separation between you and what you’re thinking.

From there, come back to your body.

Make an effort to slow your breathing. Soften your shoulders. Let your body settle a little before trying to think your way through it.

Then let the thought be there, without needing to follow it.

You don’t have to argue with it or fix it. You don’t have to get caught up in the story it’s trying to create. You can just let it sit there, without giving it your attention.

And then gently bring yourself back to how you’ve been showing up lately.

Remember moments where you spoke up. Where you handled something well and where you trusted yourself or set a boundary.

You’re reinforcing what is already true and you’re choosing the direction you want your mind to go, rather than falling back into what feels familiar.

And each time you do this, you’re strengthening a new neural pathway.

What You’ll Start to Notice

Over time, something begins to shift.

The thoughts may still appear, but they don’t carry the same weight and you don’t get pulled in the same way.

You might notice them, but you don’t automatically follow them, that is you don’t buy into the story like you used to.

There’s more space.

And in that space, you have a choice.

Progress isn’t about never having those thoughts again.

It’s about no longer being led by them.

It’s about being able to hear them… and choose something different.

There’s a steadiness that builds here.

A quiet sense of:

“I can see this for what it is… and I don’t have to become it.”

Bringing It All Together

When you’re in the middle of personal growth or shifting how you show up, it can feel like you’re moving forward one moment and slipping the next.

But what’s actually happening is more subtle than that.

Your system is adjusting to a new way of being, and that takes time, repetition, and experience.

So when old insecurities surface, it doesn’t mean you’ve undone your progress.

It often means you’re right at the edge of it.

And in that moment, you have an opportunity.

To respond differently.

To stay grounded.

To reinforce a new way of thinking.

And to strengthen the neural pathways that support who you’re becoming.

If this feels familiar, and you’re tired of feeling like you’re taking two steps forward and one step back, the next step is to actually work through it.

Book a 20-minute complimentary call with me, and we’ll talk through what’s been coming up for you and how to start shifting it in a way that feels more steady and grounded.

Karen Barnes