Why does peer feedback fail?

The most common reason peer feedback fails: Treating feedback as a referendum on your character rather than data about your calibration. When someone tells you that you interrupt people, the miscalibrated response is to feel attacked and defend your intentions. The calibrated response is to update your model: your perception of your own conversational behavior has a systematic error that others can detect and you cannot. A second failure mode is soliciting feedback only from people who share your worldview. If every person you ask for feedback sees the world the way you do, they share your blind spots. They are not calibration instruments — they are mirrors.

The fix: Identify three people who observe you in different contexts — a colleague, a friend, and a family member. Ask each one the same three questions: (1) What is something I do that I probably do not realize I do? (2) What is something I seem to believe about myself that does not match what you observe? (3) When have you seen me be most wrong about something while being most confident? Write down their answers verbatim — do not paraphrase, reinterpret, or soften. Compare across all three respondents. Any overlap is high-signal: it identifies a blind spot that multiple independent observers have detected and that your own introspection has missed.

The underlying principle is straightforward: Other perspectives correct for your systematic blind spots.