The Problem Isn't Caring — It's Caring Indiscriminately
You should care what some people think — your closest friends, your partner, your mentors. The problem is when you care equally about everyone's opinion, including strangers on the internet and acquaintances you'll never see again. That's not sensitivity — that's a misallocation of emotional energy.
Why We're Wired to Care
Humans evolved in small groups where social rejection meant death. Your brain treats social disapproval as a survival threat because, for most of human history, it was. Understanding this doesn't make the feeling go away, but it helps you recognize it as a signal to evaluate, not obey.
The Practical Fix
Know who matters. Build a short list — five people maximum — whose opinions you genuinely value. For everyone else, notice the anxiety, acknowledge it, and move on. This gets easier with practice, and it gets much easier when you actually know how people perceive you.