Yes. Sometimes we don't know what to do out there in the real world.

I agree with Bill here of course. Don't let a couple of bad occasions change you. Sometimes (a lot of the time) stuff is on them...and you are acting perfectly appropriately. It would be sad for them to influence your future self in a negative way, I think.

Also, for people like you and me (yeah we have self-esteem issues I think, unless I am reading you wrong here) things are more emotional. We worry we may be offending a lot and we try to act a certain way "just in case". Sadly, I don't know how to improve myself in this area (although some people here have helped me more than they know)....To me, it's one of the toughest things to do. But awareness is the first step.