Would you eat uranium?
The question seems absurd. Of course not. Uranium is radioactive. It would poison you from the inside out, slowly destroying your health in ways you might not even notice until serious damage was done.
But here's the thing: many people consume the psychological equivalent of uranium every day. They feed themselves thoughts and beliefs that slowly poison their potential, disguised as something harmless—even helpful. We call it "common sense."
The Toxicity of the Obvious
"Plain common sense" and "obvious" thinking can become a form of psychological poisoning. These are the beliefs that feel so self-evidently true that we never think to question them. And that's precisely what makes them dangerous.
Because unlike actual uranium, which would trigger alarms and protective protocols, radioactive beliefs slip past our defences. They're accepted without scrutiny. They become the invisible walls that define what we think is possible.
The most limiting beliefs aren't the ones we argue with. They're the ones we never notice we're holding—because they feel too obvious to question.
A Case Study
I once worked with a woman in her fifties who came to me wanting help finding an intimate relationship. She'd had a traumatic breakup in her teens and had avoided relationships entirely for her adult life.
Her "common sense" belief? It was now too late. She believed she'd lost her attractiveness with age, making romantic prospects essentially impossible.
This felt so obviously true to her that she'd never questioned it. Why would you question something so plainly self-evident?
Working With Logic, Not Against It
Rather than challenging her self-perception directly (which rarely works), I decided to accept her premise and follow the logic. Let's do the maths, I suggested.
When she was younger, she estimated about 70 out of 100 potential partners might find her attractive. A generous self-assessment for her youth.
Now, being pessimistic, she figured maybe 1 in 200 people might find her attractive. A harsh self-assessment for her current age.
Australia has roughly 10 million people of the opposite sex. Even with her pessimistic 1-in-200 ratio, that meant approximately 50,000 potential matches.
She paused.
"I don't need 50,000. I only want a few to date. That will let me find the right one."
Something shifted. Her "common sense" belief, when subjected to actual common sense arithmetic, couldn't survive the encounter. Within three weeks—after 37 years without dating—she went on her first date. She'd started accepting social invitations, something that had seemed pointless before.
Your Radioactive Beliefs
We all carry these. Beliefs that feel so obviously true that we've built our lives around them without ever checking whether they're actually valid.
"I'm not the kind of person who..."
"It's too late for me to..."
"People like me don't..."
"I could never..."
These beliefs often have the texture of humble acceptance—of "facing reality" or "being realistic." But they're not reality. They're stories we've told ourselves so many times that they've hardened into something that feels like fact.
What things do you have on your mind that seem so clearly common-sensical that they hold you back?
Changing Your Diet
The first step is noticing. When you catch yourself thinking in terms of impossibilities and certainties about your limitations, pause. Ask yourself: Is this actually a fact? Or is this just something I've believed for so long that it feels like one?
Then, like we did with the maths, subject the belief to scrutiny. Follow it to its logical conclusion. Check it against actual evidence, not just your feelings about it.
You might find, as my client did, that what seemed like an immovable wall was actually just a shadow—cast by a belief you never thought to examine.
Check your psychological diet. You might be consuming something radioactive without knowing it.