There's a gap between something happening and you feeling anxious about it. It's tiny — usually a fraction of a second — but everything important happens inside it.
The ABC model is a CBT tool designed to help you see what's happening in that gap. Once you can see it, you can change it.
Where the ABC model comes from
Psychologist Albert Ellis developed the ABC model in the 1950s as the foundation of Rational Emotive Behavior Therapy, which later became one of the core frameworks of CBT. The insight behind it was simple but radical for its time: events don't cause emotions. Beliefs about events cause emotions.
That shift in understanding changes everything about how you approach anxiety.
Breaking down A, B, and C
A — Activating Event
This is what actually happened. The objective, observable facts with no interpretation attached.
Not "my friend ignored me" — that already contains an interpretation. The activating event is: "I sent a message at 2pm and hadn't received a reply by 6pm."
Getting specific about the A is harder than it sounds. Most of us jump straight to our interpretation without realising we've done it. Practice describing events as if you were a camera — only what can be seen and measured.
B — Belief
This is where anxiety lives. The B is the automatic thought your brain generated in response to the event — usually in less than a second, and usually below conscious awareness.
"She's angry at me." "I said something wrong." "This friendship is falling apart." "Something bad has happened to her and it's somehow connected to me."
One unanswered message. Four beliefs, all generated automatically, none of them verified.
The belief is the variable that matters. The same event — unanswered message — would produce completely different emotions in different people depending on their belief about it. Someone with low anxiety might think "she's probably busy" and feel nothing. Someone with high anxiety might catastrophize and spend the afternoon in a spiral.
The event didn't cause the anxiety. The belief did.
C — Consequence
The C is the emotional and behavioral consequence of the belief. How you felt, and what you did (or didn't do) as a result.
Anxious. Unable to focus. Checked your phone twelve times. Drafted and deleted a follow-up message. Felt a knot in your stomach through dinner.
All from an unanswered message. All mediated by a belief that was never examined.
Adding D — Disputing the belief
Ellis later added a D to the model: Disputation. This is where CBT does its work.
Once you've identified the belief, you examine it. Not to replace it with toxic positivity, but to test it against actual evidence.
Questions to ask yourself:
- What's the actual evidence for this belief?
- What's the evidence against it?
- What are other possible explanations for the event?
- If a friend told me they had this thought, what would I say to them?
- What's the most realistic outcome here, not the worst one?
In the unanswered message example: she might be in a meeting. Her phone might be dead. She might be with family. She replied to your last ten messages within minutes — what does that history tell you about the likelihood that she's suddenly angry?
The disputation doesn't erase the anxiety immediately. But it creates distance from the automatic thought. And with practice, the distance comes faster and the anxiety is less intense.
How to use the ABC model every day
You don't need a therapy session to practice the ABC model. You need five minutes and something to write on.
When you notice anxiety spiking, pause and write out:
A: What specifically happened? (facts only) B: What am I telling myself about it? (the automatic thought) C: What emotion is this creating? How intense is it on a scale of 1-10? D: What's the evidence? What are other explanations? What's a more balanced thought? E: How do I feel now? What's the intensity on the same scale?
Most people find the intensity drops several points just from going through the process. Not because the problem went away, but because they stopped feeding the catastrophic interpretation with unchallenged attention.
Why writing it down matters
You can try to do this entirely in your head. Most people find it significantly less effective than writing.
Writing slows the process down. It forces you to articulate the belief in words, which immediately makes it more examinable. Thoughts that feel overwhelmingly true when they're swirling in your mind often look questionable when you see them written on a page.
It also creates a record. Over weeks of ABC journaling, patterns become visible. You start to notice that your B is almost always some version of the same distortion — mind reading, catastrophizing, overgeneralization. That recognition is powerful. When you know your brain's default error, you can catch it earlier.
That's not just anxiety management. That's learning how your mind actually works — and that knowledge, built up over time, is one of the most useful things you can have.
BrainHey is a free AI journaling app built on CBT techniques including the ABC model. Available on iOS, Android, and web at brainhey.com