@BabsCabsIsLocal firstly 
Please know that you are enough, and you are loved.
Last April I was like this, I suffered sexual and physical abuse from my parents, then was abused in my care home, I managed 20 years before I broke, I attempted suicide, it was horrendous. I felt like you do now, it's been in long road, with CBT and lots of therapy, but I'm getting 'back to normal.
Have you tried therapy, never think of yourself as a pain to these services, if you need it they will help. Please know if you need to chat, I'm always around, I hope this thread shows you you're not alone 