The CBT Triangle

CBT rests on a three-part model: thoughts, feelings, and behaviors form a connected triangle, each one shaping the other two in real time.

An anxious thought ("This presentation will go terribly") creates an anxious feeling (tight chest, racing heart). That drives avoidant behavior like procrastinating, which reinforces the thought. The cycle speeds up.

The power of CBT is that you can intervene at any point. Change the thought, and feeling and behavior shift. Change the behavior, and the rest adjusts. Break any link and the cycle loosens.

Most people try to fix the feeling directly: "Just stop being anxious." That rarely works. CBT targets the inputs.