Understanding OCD’s Real Mechanics: The Lies That Get Stuck in the Brain and How to 'Unstick' Them

A lie, a loop, and a lesson about OCD's sticky thoughts, and how to get unstuck.

Recently, I saw a scene in a television show where an adult was trying to explain Alzheimer’s to a child. The adult said, “[He] has a lie stuck in his head that makes him sad.” The child then asked, “How do we get the lie out of his head?”

That scene resonated with me because it’s also a way to explain the mechanics of OCD for those who live it.

OCD is, at its core, a lie that gets stuck in the brain. It isn’t a quirky preference, personality trait, nor is it a desire for neatness or order.

It’s a lie.

A lie that feels true in the body. One that hijacks the threat circuitry. One that refuses to leave, no matter how many times you check the lock, wash your hands, replay the conversation, or mentally review your moral character just to be sure you aren’t “that” person.

The paradox of OCD is that the person living with it knows it’s a lie. We know the stove is off. We know we didn’t run someone over. We know we aren’t secretly vile monsters. We know we are not our thoughts.

Throughout the posts and podcasts here, I have described OCD as a broken amygdala problem because of the constant feeling of “fight, flight, or freeze.” But researchers are refining and reclassifying that, noting that the amygdala is actually reacting to a deeper circuit issue, which I hope to address shortly in another piece here.

Here’s what’s really going on inside: the brain’s alarm system, the cortico‑striato‑thalamo‑cortical (CSTC) loop, gets jammed. The “threat detected” light stays on, making the lie feel urgent, dangerous, and morally catastrophic.

So, the question becomes the same one the child in the TV scene asked: How do we get the lie out of the head?

The answer is both simple and profoundly counterintuitive: You don’t pull the lie out; you just stop feeding it.

Every compulsion, every check, every reassurance, every ritual, every mental review, is like giving the lie nutrients that help it grow stronger and dig deeper.

It has learned that if it screams loud enough, it will receive a response. We reinforce the negative behavior when we respond with the ritual or reassurance. The way out is learning to hear the lie without obeying it.

This is the heart of Exposure and Response Prevention (ERP). Not exposure to fear, but rather exposure to uncertainty. Exposure to the possibility that the lie might whisper again. Exposure to the discomfort of not fixing, not checking, not neutralizing.

Then comes the response prevention: Choosing not to perform the ritual. Choosing not to reassure yourself. Choosing not to negotiate with the lie.

At first, it feels impossible. It feels like standing in front of a fire alarm that won’t shut off. It feels like you’re doing something dangerous.

This is the beauty of the word we’ve discussed so much here: neuroplasticity, where the brain learns a new pattern. When we retrain the brain in this way, the alarm quiets, the loop loosens, and the lie loses its power.

The lie is a glitch in a circuit. A misfiring in a loop. Faulty circuitry giving an error message that feels like a moral emergency. When we stop feeding it, obeying it, and treating it like truth, the brain responds in an amazing way: it begins to unstick itself.

If you’re someone living with OCD (or love someone who is) remember this: OCD is not a character defect, a moral failing, or personal weakness. It is a lie stuck in the head.

With the right tools, the right support, and the right kind of practice, you can teach your brain to let it go.

What have you tried to get your brain unstuck from a lie? Chime in below!

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NOTE: The ideas offered on this podcast should not be substituted for medical or psychiatric advice.