I think each one of us should possess a small amount of the ''i don't care'' attitude. It's important with respect to anybody, if you ask me. For two reasons:
Firstly, it's obvious that every other person thinks of us in various lights. That's how nature is. Everybody around us shouldn't actually matter.
Secondly, and more significantly, i guess that this thought helps us be us, personally. At the same time, it kind-of makes us successful in our own individual ways, however different it may be. With a result of 'i did what i wanted to do'. It can be exultant, really.