As someone diagnosed with chronic depressive disorder and acute anxiety disorder (a wonderful combination that swings me from lethargy to high flung tearing out of my hair) I can relate in part to what you've written (though I've been blessed with having a supportive partner rather than abusive ones and for that my heart goes out to you, can't have been easy on top of everything else you're going through).

With regards to anxiety, it is a disorder in it's own right and relevant to how we deal with the world around us... so I would recommend if you can to see a T who could help you to find ways to manage.

One thing on your side is that despite you saying

22 is a young age and you have a lot of opportunity ahead of you... you have plenty of time to go back to college should you desire or find a job that suits your nature and succeed in it... you just need to take those little steps to regain self esteem and find ways to cope with or even overcome peeks of anxiety.

Personally I failed school completely... in the UK we have g.c.s.e's and there was no way I could progress to the next step without resitting... with that said, I did end up going to college, resitting those basic qualifications and that led to me eventually going to university and getting my degree. Failures do not stop us in our tracks forever and like I said, there is no reason why you can not pursue your dreams... just need to do a bit of self care first.