Dear Jsua
Being a victim of emotional abuse myself as well as witnessing abuse of a loved one (Who unfortunately didn't make it). I know exactly what you are going through regarding negative self take. Yep, it never stops, I'm hopeless, I'm stupid, I'm useless and on it on it goes. But I've come to realise, is it really me abusing myself? Or is it my abuser still abusing me even though he is gone. These are just old mind patterns that continue long after the situation has passed. I still get it ever single day, as soon as I make a mistake or forget something up it comes, those old mind patterns that my abuser deeply embedded into my brain for so many years.
It takes time and a lot of practice, but they are just thoughts, that's all and you don't have to listen to them. Just the fact that you are aware of them (a lot of people aren't) means they are already loosing their power over you.
What helped me a lot is practicing mindfulness and listening to Echart Tolle (search Youtube for Eckhart Tolle negative self talk). But find your own path, put together a little toolbox of resources you can listen to or read whenever you feel your starting to slip back.
