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The CBT triangle: how thoughts, feelings and actions connect
The cognitive triangle explained with everyday examples, how to fill one in for your own week, and how to break a bad loop at its easiest corner.
The CBT triangle, also called the cognitive triangle, is a simple drawing at the heart of cognitive behavioral therapy. It has three corners: thoughts, feelings and actions. Each corner pushes on the other two. A thought changes how you feel, the feeling changes what you do, and what you do feeds back into what you think.
It sounds obvious written down. It becomes useful when you fill one in for a moment that went badly, because the triangle shows you where you can step in.
The three corners
- Thoughts: what goes through your mind. Often quick, automatic sentences: They're annoyed with me. I can't do this.
- Feelings: emotions like worry, sadness, anger or shame, and the body sensations that come with them: a tight chest, a hot face, a heavy stomach.
- Actions: what you do, or avoid doing. Checking your phone, cancelling plans, staying up late, snapping at someone.
Some therapists draw the body as its own corner, which turns the triangle into a five-part diagram: the situation, thoughts, emotions, body sensations and behaviour. You may see it called the five areas model or the "hot cross bun". It's the same idea with more detail.
Three everyday examples
The unanswered message
You text a friend. Three hours later there's still no reply.
- Thought: They're upset with me.
- Feeling: anxious, a knot in the stomach.
- Action: you check the phone every few minutes and reread your message for anything rude.
The checking keeps the thought alive. Every time you see no reply, the thought gets a little more convincing.
Sunday evening
- Thought: This week is going to be awful.
- Feeling: dread, restless, tired.
- Action: you stay up scrolling to put off Monday.
Then you're exhausted on Monday, which makes the week feel exactly as awful as you predicted.
The presentation
- Thought: Everyone will see I don't know what I'm doing.
- Feeling: nervous, shaky hands.
- Action: you read straight from your notes and avoid eye contact.
The presentation goes flat, and the thought collects one more piece of fake evidence.
Notice that in each example the loop closes on itself. That's what the triangle is for: seeing the loop.
How to fill in your own triangle
Pick one specific moment from this week, not a general mood. Then write:
- Situation: where you were and what happened, like a news report.
- Thought: the sentence that went through your head, word for word.
- Feeling: name the emotion and rate it from 0 to 100. Add any body sensations.
- Action: what you did next, or what you avoided.
- What happened after: did the action make the feeling better for a moment and worse later?
Five minutes is enough. If you do this for a few different moments, you'll often find the same thought showing up in all of them.
Break the loop at the easiest corner
You don't have to fix all three corners. Change one and the others usually follow.
Change the thought. Ask whether it's the whole story. What else could explain the silence? Your friend might be at work, asleep or driving. The CBT thought record is the full version of this step, and our list of thinking traps helps you spot the common shortcuts.
Change the action. Do the opposite of what the feeling wants, in a small way. Put the phone in another room for an hour. Go to bed at your normal time on Sunday. Look up from your notes once per slide. Then watch what actually happens. In CBT this is called a behavioural experiment.
Start with the body. When the feeling is too strong to think clearly, calm the body first. A minute of slow breathing with a longer out-breath often lowers the volume enough to try one of the other corners. See how to calm anxiety fast for a few one-minute resets.
Cognitive triangle vs cognitive triad
These two get mixed up a lot, partly because they sound alike.
- The cognitive triangle links thoughts, feelings and actions in a single moment. It's a tool you can use on any situation.
- The cognitive triad comes from Aaron Beck's early work on depression. It describes three negative views that often go together in depression: of yourself ("I'm a failure"), of the world ("nobody can be trusted") and of the future ("it will never get better").
The triad describes a pattern. The triangle helps you work with one moment of it.
Explaining the triangle to a child
Kids can use it too. One way to put it:
What you think changes how you feel, and how you feel changes what you do. If you think the dog is scary, you feel scared and you run away. If you think the dog wants to play, you feel curious and you go say hello.
Then ask them to draw their own triangle for something that happened at school.
When it's hard to fill in
Sometimes you can't find the thought, only the feeling. That's normal. Start with the feeling and the action, and ask: What was I afraid would happen? The answer is usually the thought. If the loops feel too big to work on alone, CBT with a therapist uses this same triangle with more support. Our plain guide to CBT explains what that looks like.
The triangle, in seven pages
The first pages of Untangle a thought in Leaf by Leaf follow the triangle: what happened, what thought keeps coming back, and what you feel and how strongly. The wind blows in with the situation, the thought settles on a leaf, and the heavier the feeling, the bigger the leaf grows and the less it sways. Then the game walks you through the thinking traps and the facts, and at the end the tree lets the leaf go.
You can try all seven pages on the home page without buying anything. Nothing you write there is saved or sent.