[The following is not meant to offend, it's merely a elaboration on a though. No personal offense is meant by it.]
I don't like to see it as ''my SA''. It's not a object inside of me that causes me to be nervous and scared. ''Social Anxiety'' is merely a label that describes a set of conditions, feeling and emotional responses to certain circumstances.
For all intends and purposes, Social Anxiety is a feeling. A reoccurring feeling. By claiming it as ''my'' or ''your'' it becomes a thing too close to heart. Almost a physical part of you. By doing so you unconsciously claim the feelings as something that's yours. As if it's supposed to be there. Which it doesn't. Social Phobia is as much a part/function of you as being happy or sad are.
Happy and sadness both come and go, though. While the feelings of social anxiety tend to reoccur. But, happiness and sadness have a trigger, just like any other feeling. Even the feelings of fear and anxiousness are rooted somewhere. The question shouldn't be ''What am I afraid of, and how afraid am I?'', that won't get you any further. The question should be ''Where does the fear come from, and how do I change/remove the source?''.
I'm not going to rate my fears, because it doesn't help me. Whatever that trigger is inside me that causes me to be afraid, doesn't belong there. And I refuse to acknowledged it as a native/adopted part of me.