Wow, this rings so true of myself, but not reality. Recently someone told me I was cold and for once I didn't try to defend myself. I can assure you it is just anxiety, we are not bad people or unkind, there's a difference! Just do what makes you comfortable. Make yourself look at people and say hi, I normally just nod my head at first and smile. If they don't respond, don't think of them as unfriendly just think, "Gee, maybe they have some bad anxiety too!" It does help my thinking about myself.