Most Helpful Guy
You dont have to go on parties all the time just because your sister does. Im sure you might seem shy compared to a person who is extremely outgoing, I'm more like you than your sister. I'm never socially awkward when I'm around nice people who have nice personalities.
Most Helpful Girl
I think I know how you feel.
I have anxiety and I really struggle to maintain friendships. Partys are normaly out of the question.
my closest person is my boyfriend because he takes the time to understand that I struggle with people.
it is really upsetting and I go through cycles of depression because of it (thankfuly only lasting a week at most) and social settings are always stressful.
I also have a friend whos stuck with me since year 1, so im lucky in that regard too.
there is nothing wrong with you per se, you've got social anxiety and that's hard to deal with.
it sounds like its bothering you so my top suggestion would be to see a psychologist and get some strategies to overcome the anxiety.
a general rule is to do the things that make you feel awkward. get out in the party and find a way to talk to people that leaves you feeling ok by the end of it. basically just starting a conversation with a random. it doesn't have to go anywhere important and it doesn't have to mean anything. just practice and figure out what people respond well to. e. g asking people about themselves. how they ended up at the party