I agree with the most recent posts answering your question. I’m definitely an introverted person, and don’t really enjoy engaging people for too long a period of time. It wears me out. I’m more comfortable letting others do the talking, and if that is what you mean by “being quiet“, then I know exactly what you are talking about. In any event, for whatever reason you are a quiet person, there is absolutely nothing wrong with you. And if others don’t like it, then they are not very good friends, are they?