What is Johari window?

Example: Your manager says 'your technical work is strong, but people find you hard to collaborate with.' You immediately focus on the first clause — strong technical work — and mentally dismiss the second. You tell yourself the manager doesn't understand your communication style, or that your teammates are too sensitive. The speed of that dismissal is the signal. You didn't evaluate the feedback; you neutralized it. The collaboration issue could be the single most important thing limiting your career growth, and your defensive response just ensured you won't examine it.

This concept is part of Feedback Loops in the How to Think curriculum.