Why Do I Even Care

I don't get it, I mean I am being myself and doing the things that I do and then out of no were this guy i work with is all on my ass about what I tell people and telling me that i should "worry about what people think of me" first of all my parents taught me not to worry about things like that and be myself cause if I went aroud worring about stuff like that I wouldn't be the peroson that I am.