Fail. It sounds like you are confusing this point away from self-improvement only to redirect it towards arrogance and doubling down with defensiveness.

You should always seek to improve yourself to perform and feel better regardless of the weak, sensitive, enviable people around you. Improvements that build confidence are internalizing qualities where arrogance, vanity, and acceptance are externalizing qualities. I have seen insecure people get upset when someone else takes risks with originality. Ignore the insecure people.