Anxiety, perfectionism and worry, oh my!

Let's see, what can I pull out about my life... I'm 21 years old, currently studying at university. I heard about this site a long while ago, but only just came to it the other day after a little meltdown after getting a less-than-great grade (by my standards) on a paper the other day. My whole future felt like it was coming down around me which in retrospect was a pretty big overreaction - anxiety in a nutshell... Anyway, I was Googling ways to find people to talk to, as I was alone at the time and tired of feeling anxious, and found my way here. Still not actually spoken to anyone yet, but small steps, right?! That meltdown about the paper is pretty much me to be honest. My standards and pressure I put on myself are far too high and cause me a lot of anxiety. And when I actually feel anxiety I have a tendency to rely on others to pull me out instead of trying to do it myself, or I avoid the things that cause it :| Especially through my girlfriend. I put upon her far too much with my issues and although she's incredibly helpful and kind, I definitely need to expand my support system. I think I've been on an upwards path since being diagnosed with anxiety (when I was about 17). I've managed to do things I never thought I could. However, there's still a long way to go... I really want to get to a stage where I stop fearing my anxiety, and learn to live with being uncomfortable sometimes. In any case, I'm feeling surprisingly optimistic today, but who knows how long that'll last! :)