I can't do anything- advice?

I can't do anything about my AvPD.
Its not that i've given up, i just feel completely trapped in a web of problems.
I'm 17, my parents are never around. Ive suffered with anorexia, BDD and depression, yet nobody noticed. My brother tried to kill himself a couple of yrs ago and all the attention seems to be on him. I feel like i cant be bothered to address the subject if that's the only way to get attention from my parents. My energy is just really low at the moment.
I had to take a yr off from education last yr because i became so stressed and i'm a complete perfectionist about evrything. During this time i was mostly alone and just felt ill all the time. In the UK, it seems like there is help for so many disorders: OCD, depression etc, yet avPD is completely unnoticed. I don't know where to begin.
All i know is that if i carry on like this, im gonna end up a seriously ###$ up individual and i really don't deserve that life. It seems so stupid because at 17, i should be having the best time.
Does anyone have any advice? is anyone feeling completely suffocated by everything?

Everyone here is right there with you. It has helped me knowing I'm not the only person suffering from these symptoms in the world. I like to write and I would recommend keeping a diary. Sometiems It really helps. Therapy is always an option. I wanted to try and deal with my emotions without meds and therapy recently but I'm realizing that, at the very least, I will have to go and talk to someone. There are great therapists out there. Mine is awesome. He has a way of putting things that I never have to be bothered with again. You'd think if he was so good, I'd go to him iwth every trouble. Truth is, I'm stubborn and try and deal with things by myself. Not always so good. Its harder for us because we don't talk to people or confide in them the way other people do. I'm never completely honest with another person. So, therapy from a third party helps. I would try that if I were you.
I remember when I was 17, that's when all my symptons started. I'm not just an avoidant, I have a lot of anxiety, GAD, panic attacks, etc... I have been when you are and, if you're willing to work with yourself and not against yourself, like I've been known to do, you will overcome this challenge and succeed. In the meantime, we're all here to listen. We know what its like