No matter how strong or positive you are, sometimes what people say or think about you really leaves a mark... Such situations either land up making you too conscious of how you are perceived as, and in that interest you forget to be yourself. Or take after developing a barrier between those who spoil your day, and end up being lonely!
I wont say that whatever is said about you shouldn't bother you, because it is but natural! And really very few are super carefree to attain that sainthood! But you don't necessarily have to resort to such self destructive methods for tackling these situations!
Recently I came across someone who happed to share his secret of being that super carefree person! He began with saying "Nobody and nothing can bring my high spirits down! Because whenever I come to know about some one's opinion about me, I just say to myself - What other's think of me is none of my business!"
Isn't it excellent? To be yourself, still be happy around people who talk about you and at the same time completely ignore what is being said about you; just say it from the top - "What other's think of me is none of my business"! Sounds like a recipe for high spirits to me! :-)