What is using anger for self-knowledge?

Using anger for self-knowledge is a concept in personal epistemology: When you feel resentment something you value is being threatened or denied.

Example: Your colleague takes credit for an idea you proposed in last week's meeting. The flash of irritation you feel isn't petty — it's your value of intellectual honesty being violated. You feel it in the jaw, the chest, the urge to correct the record. If you suppress it, you lose the signal. If you chase revenge, you lose the lesson. But if you pause and ask 'what value is being violated here?' you discover something concrete: you value attribution and honest credit. Now you know something about yourself you can act on — you can set expectations about credit-sharing, choose collaborators who share that value, or recognize when a workplace systematically violates it.

This concept is part of Phase 32 (Value Identification) in the How to Think curriculum, which builds the epistemic infrastructure for value identification.