The CBT Triangle: How Thoughts, Feelings and Behaviours Connect
A simple model from cognitive behavioural therapy that shows how your thoughts, feelings and behaviours influence each other — and how changing one can shift the others.
Why this works
The CBT Triangle is a simple way to understand how your thoughts, feelings and behaviours are all connected. When something happens, these three elements influence each other in a loop. Change one, and the others shift too.
For example, if you think "I'm going to fail this exam," you might feel anxious (feeling), and then avoid studying (behaviour). The avoidance makes failure more likely, which reinforces the original thought.
The CBT Triangle is based on Aaron Beck's cognitive model — the foundation of cognitive behavioural therapy. Decades of research show that our thoughts are not facts. They are interpretations, and we can learn to notice and question them. By mapping out the triangle, you create distance between yourself and your automatic reactions.
For neurodivergent brains
Write or draw the triangle on paper rather than trying to hold it all in your head. This reduces working memory load.
If you tend towards impulsive responses, the triangle gives you a structured pause before reacting.
Try drawing the situation instead of writing words. Stick figures, colour-coding, or mind maps all work well.
If identifying thoughts feels tricky (it often does with ADHD or alexithymia), start with the body — where do you feel it? Then work backwards to the thought.
Ready to try?
A short guided exercise you can do right here.
Something happens — an event, a conversation, a memory. Write it down in one sentence.
Draw a triangle. At each corner, write what you thought, how you felt (emotionally and physically), and what you did or felt like doing.
Look at how each corner influences the others. Which one kicked off the chain? Could changing one corner change the rest?
Tap each corner to explore the connection.
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When to use this
The CBT Triangle is useful when you feel stuck in a pattern — the same worry keeps coming back, or you keep reacting in ways you later regret. It works well for everyday stress, relationship frustrations, work anxiety and low mood.