Core Beliefs Worksheet
Get underneath the surface thoughts to the deep belief about yourself driving them, test it against the evidence, and start building a fairer one.
About this tool
Core beliefs are the deepest, most absolute things we believe about ourselves, other people, and the world. They usually take the form of short, sweeping statements like "I'm not good enough," "I'm unlovable," "people can't be trusted," or "the world is dangerous." They often form early in life and then operate quietly in the background, shaping the automatic thoughts we notice day to day.
In the CBT model, core beliefs sit at the bottom layer. Above them are intermediate beliefs (rules and assumptions like "if I let people in, I'll get hurt"), and at the surface are automatic thoughts in specific situations. A core belief acts like a filter: it makes us notice and remember information that confirms it, while discounting or explaining away anything that contradicts it. That is why a belief can feel like simple fact even when the full evidence does not support it.
Because core beliefs are so well-defended, they do not shift from a single insight. The work is to name the belief clearly, then deliberately gather the evidence it has been filtering out, including the small everyday counterexamples. Over time, you craft a new, more balanced belief and start collecting evidence for that one instead, often using a positive data log that you add to each day.
This worksheet walks through that process once. Real change comes from repeating it and from testing the new belief in the real world, which is where behavioral experiments come in. Persistent or painful core beliefs, especially those tied to trauma, are worth working through with a therapist.
- Beck JS. Cognitive Behavior Therapy: Basics and Beyond. 2nd ed. Guilford Press; 2011.
- Greenberger D, Padesky CA. Mind Over Mood. 2nd ed. Guilford Press; 2016.
Core Beliefs Worksheet FAQ
What is a core belief?
A core belief is a deep, absolute conviction about yourself, others, or the world, often formed early in life. Examples include 'I'm not good enough' or 'people can't be trusted.' Core beliefs shape the everyday automatic thoughts you notice.
How do you change a core belief?
Slowly and with evidence. You name the belief, gather the counterevidence it has been filtering out, build a more balanced belief, and keep collecting proof for the new one, often with a daily positive data log and real-world experiments.
How do I find my core belief?
Start from a recurring negative thought and keep asking what it would mean about you if it were true. That downward-arrow questioning usually lands on a short, absolute statement, which is the core belief.
Is my information saved?
No. Everything stays in your browser and is never uploaded or stored. The PDF is generated on your own device.