Socially awkward

I am ridiculously awkward in any social situation.  I never know how to respond and then when I finally do pick some sort of awkward thing to say or do, I always feel like it’s the wrong thing.  I suspect that people might think I’m strange (I know I do) but I never really know how people perceive me.  I know this is a result of me not being comfortable with myself.  I have gotten much better but I still think about it.