By "severe anxiety" I mean I've distanced myself from everyone I used to know, and I never go out much anymore. And a few years ago I woke up to 2 shrinks and 5 cops in my room at 9am, which ended in me being taken off in hand-cuffs under a mental health order. Thankfully they concluded after a few days I wasn't in fact mentally ill, but at that point it struck home, and I started to loose the weight I put on over the years, which is step 1 to "recovery" (so far, so good!)
Excuses, I know, trust me, if I could go back in time, I'd go back and "suck it up" earlier, to save myself a ton of headache thus-far. :-)
Good luck!
Nothing you have done -- avoiding school, losing touch with people, whatever other mistakes -- makes you a bad person. It just means you took (or didn't take) actions and they had consequences. You're suffering through those consequences now, but that just means you're suffering through those consequences... it says nothing about you or the situation, beyond than that simple, provable fact.
A lot of anxiety comes from guilt and fear, and trying to avoid guilt and fear. So, forgive yourself, and be kind and loving to yourself.