Why We Believe Our Dark Thoughts

Someone you love takes a while to reply to your message, and within minutes your mind has written a whole story: they’re upset with me, I must have done something wrong, everything is about to fall apart. Or a small ache appears, and your thoughts leap straight to the worst possible explanation.

This isn’t you being dramatic, and it isn’t weakness. It’s a very old way the human brain works, and understanding it is the first step toward loosening its grip.

Meet Mundhir, your inner alarm

In the episode “Why do we believe our dark thoughts?” on the channel, I talk about an inner voice I call Mundhir (مُنذر). In Arabic the name means “the one who warns”, and that is exactly what he does. He scans everything for danger and rings the bell at any possibility, however distant.

The problem isn’t that Mundhir exists. He really does want you safe. The problem is that he’s oversensitive: he rings the same bell for a late text as he would for a real, immediate threat. And when we’re tired, worried or short on sleep, his voice gets louder.

Why does his voice sound so convincing?

The brain tends to give threats more weight than good news, something psychologists call the negativity bias. From a survival point of view, this made sense: being too cautious was safer than missing a real danger. In modern life, though, it means a frightening thought can arrive feeling like an established fact.

And because catastrophic thoughts often come with a feeling in the body, like a tight chest or a knot in the stomach, we take that feeling as evidence: “If I’m this scared, it must be serious.” The thought and the sensation feed each other.

This often gets stronger at night, after a draining day, or when we haven’t slept enough. A tired mind can find it harder to see the whole picture, so it fills the gaps with worst-case stories.

But a thought, however loud, is still a thought. It isn’t an order you have to follow, or a truth you have to believe.

Simple steps to notice a thought instead of obeying it

1. Pause and name what’s happening. When you notice your mind starting to race, say to yourself: “That’s Mundhir ringing the bell.” Naming it creates a little space between you and the thought.
2. Rephrase the thought. Instead of “Something bad is going to happen,” try: “I’m having the thought that something bad is going to happen.” Some psychologists call this defusion: looking at a thought, rather than looking at the world through it.
3. Ask a kind question. What evidence do I actually have? What else could be true? What would I say to a dear friend who shared this thought with me?
4. Come back to your body. Take 3 slow breaths, letting each out-breath be longer than the in-breath. Rest a hand on your chest or belly and notice its warmth. A calmer body sends Mundhir a clear message: I am safe right now.
5. Thank Mundhir, then take back the lead. Tell him gently: “Thank you for trying to protect me. I’m okay right now.” Then choose one small thing to do in this moment, however simple.

Gentleness, not a battle

It’s tempting to try to force dark thoughts away, or to blame ourselves for having them at all. But fighting a thought often gives it more energy. The aim isn’t to make Mundhir disappear. It’s to learn to listen to him without handing him the keys to your day.

One gentle way to do this is to give Mundhir an appointment: fifteen minutes during the day when you write your worries down on paper. When an anxious thought turns up outside that time, tell it calmly: “I’ll come back to you at your appointment.”

If faith is part of your life, tawakkul (trust in God) may belong in this letting go too: doing what is in your hands, then placing what isn’t in God’s care.

With practice, that small space becomes easier to find. The bell won’t stop ringing completely, but you’ll recognise it sooner, and you’ll remember that you have a choice.

Your next step

To get to know Mundhir better, watch the episode Why do we believe our dark thoughts? (in Arabic). On nights when your mind refuses to settle, try the meditation to calm overthinking, with its long exhales and gentle body scan.

Dark thoughts often have feelings hiding underneath them, waiting for a name. You can download the free emotion wheel to help you put clearer words to what you feel.

If your dark thoughts include harming yourself or ending your life, please don’t stay alone with them. Reach out now to a professional or your local emergency number. You’ll find some places to start on our support resources page.

This article is for awareness and support only and is not a substitute for professional help.