People make in very nervous in social situations. 
Really? That's too bad. Do you have anxiety or some other condition?
Social anxiety I think. It's common I think. Nearly 90% of people report having it. 
That much be hard to deal with. Do you take medication or exercise or meditation?
shyness) at some point in their lives. Half of the individuals with any social fears meet criteria for social anxiety disorder. The function of social anxiety is to increase arousal and attention to social interactions, inhibit unwanted social behavior, and motivate preparation for future social situations.
Stages.
Stages Child development.
Some feelings of anxiety in social situations are normal and necessary for effective social functioning and developmental growth. Cognitive advances and increased pressures in late childhood and early adolescence result in repeated social anxiety. Adolescents have identified their
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Byrnes says of his character, "Joe's been through the wringer. (…) It would be hard for people to be around him too much, I think. He's kind of a loner, because at some point he's got to have some serious demons. These people have witnessed this crazy stuff; how do you deal with it ? It's hard to be ordinary. Joe is extra ordinary [sic], he's really ordinary. I mean that in a good way."