Introversion and social anxiety are two different things. I securities about how people see you are third. The original person was introvert.
People talk every day with their spouses and kids. They talk everyday with their collegues or schoolmates. They talk every day with peer group in hobby or sport if they have involved one.
My point here is not that you have to do it or everyone have to do it. But the more you are with people who communicate, the easier it is to find topics. Because it is skill learned by observation and by practicing.
