[speakeasy]

I think everyone cares what other people think to some degree. It's hardwired into us since humans evolved as tribal/pack animals. We don't want to be excommunicated from whatever "group" we belong to. Thus we care. People who truly don't care what others think of them are sociopaths. Jeffrey Dahmer is a guy who didn't give a fuck what anyone thought of him. People will say they don't care, but I think that's posturing or they just aren't being fully honest with themselves.

You need to find some healthy balance. Neither being overly concerned with the approval of others, yet not being so solipsistic that you are oblivious to how you come off to other people. Either can be serious problems in the extreme.