I've never been officially diagnosed, but am pretty sure I have at least some form of social anxiety. Or maybe it's just GAD. I don't really know, and I suppose it might not really matter. I'm just an anxious person, and it sort of really sucks.

I was always told I was shy as a kid, but I remember just feeling totally uncomfortable around people most of the time.

The most painful and obvious one for me is:
I can't talk to most people, even the ones that I really like, and really care about. I just feel anxious and awkward and uncomfortable with myself when I do. It's extremely draining emotionally, because I fail to make connections with people that I want to build relationships with. I just... can't seem to do it.
I love my friends, and have amazing people in my life, but just don't feel capable of having the connections with them that I would like to. I feel inferior to everyone else, and worthless because I can't navigate even a friendly conversation. As a result, I know almost nothing about a lot of the people I love, and that absolutely destroys me when i think about it. Vicious cycle, that.

I automatically assume I'm not wanted around and/or everyone is laughing at/disgusted by me.

I have no self-confidence and often have this sense of being to 'big' and 'taking up too much space' when I'm around other people. I don't feel I belong at all.

I pretend I don't see people that I know if I run in to them on the street or wherever; I probably look like a huge b.tch, but the truth is, the idea of small talk and seeing someone I haven't prepared for completely terrifies me. I don't know what to say. My brain just overloads and panics.

In some situations, I find myself more comfortable around complete strangers than people I already know. Again- relationship building- I don't feel capable of doing it, and assume I'm going to screw it up/seem awkward or weird.

I miss so many opportunities and experiences because I avoid so many things, because of the social aspect of them.

Any actual situation that causes me embarrassment or shame (which often end up being really little things that probably don't actually matter) can set me off in to depression/panic attacks/prolonged anxiety for the rest of the day.

Not graduating high school because I'd skip too many classes/days out of obsessively trying to avoid interactions, because the idea of spending an entire day around people was too emotionally and physically tiring. I accepted horrible grades and failed classes because of this. I'm really smart. I should have rocked high school.

I could go on, but I'm sure other people will cover some of the stuff I missed.