Arthur C. Brooks in The Atlantic:
A friend of mine once shared what I considered a bit of unadulterated wisdom: “If I wouldn’t invite someone into my house, I shouldn’t let them into my head.” But that’s easier said than done. Social media has opened up our heads so that just about any trespasser can wander in. If you tweet whatever crosses your mind about a celebrity, it could quite possibly reach the phone in her hand as she sits on her couch in her house.
The real problem isn’t technology—it’s human nature. We are wired to care about what others think of us. As the Roman Stoic philosopher Marcus Aurelius observed almost 2,000 years ago, “We all love ourselves more than other people, but care more about their opinion than our own,” whether they are friends, strangers, or enemies.
This tendency may be natural, but it can drive us around the bend if we let it. If we were perfectly logical beings, we would understand that our fears about what other people think are overblown and rarely worth fretting over. But many of us have been indulging this bad habit for as long as we can remember, so we need to take deliberate steps to change our minds.