I think everyone has an issue with themselves or else they would'nt be who they are, even good looking people find it hard to socialize and to stay on top. From my own experience in someone saying something to me, it's sometimes best to just walk away.
One time I was at mc donalds and for some reason I had a huge zit that day..it was so huge and red anways...as I was leaving the washroom some little bugger screams out, OMG that guy has a huge zit. And I walked away but I noticed people weren't looking at me, they were looking at that little kid and they were really mad at him for saying it. That made me feel happy.. but now I dont eat there and avoid oily foods.