There will be days when you wonder if you’re good enough.

Clinic overruns. That patient you couldn’t quite reassure. The comparison trap with someone who seems be effortlessly successful.

And beneath it all that familiar whisper:
“Maybe I’m not cut out for this.”

“Within you right now is the power to do things you never dreamed possible. This power becomes available to you just as soon as you can change your beliefs.” — Maxwell Maltz

When I was 18, I dreamt of becoming a doctor.

Neither of my parents went to university. I’d been voted the shyest student of the year. I chose French instead of Biology in sixth form. The path didn’t exactly scream “future medic.”

Part of me believed it was almost impossible to get a seat at Medical school.

Then one conversation changed my trajectory.

My GP, Dr Mark, looked at me and said:

“You’re going to get in.”

In that moment, he lent me his belief.

My first interview? A disaster. I stumbled. I over-explained. I left a weak impression.

But when the second opportunity came, I prepared differently. I walked in steady. I wasn’t trying to prove I deserved to be there I acted as if I already did.

Weeks later, the call came:

“Congratulations. You’ve been offered a place to study medicine.”

That sentence changed the trajectory of my life.

Here’s what I’ve learned:

Self-doubt is often just someone else’s limiting belief that we’ve internalised.

The Stoics spoke about impressions, the automatic stories that land in our minds before we examine them. Not every thought deserves your trust. Especially the ones that say, “You’re not ready.”

Modern psychology backs this up. The Dunning–Kruger effect shows that those with less competence often overestimate themselves while highly capable people underestimate their ability.

So if you’re doubting yourself…

It may not mean you’re failing.

It may mean you see the complexity.

And that’s a sign of growth.

One question for you:

Who first lent you belief when yours was running low?

And who might need you to do the same this week: a medical student, a patient, even yourself?

Tiny Friday Challenge

Next time self-doubt shows up, pause and ask:

“Is this my voice or someone else’s old story?”

Then take one small action that the confident version of you would take.

Borrow belief if you need to.

One day, you’ll be the one lending it.

You’ve got this.

Erwin