Glad to hear that there is some improvement.
Has the blaming and attacking you gone away because you enforced boundaries of not sitting there and listening to it? Or did she just decide to stop doing it?
I'm drained. I do a lot and get little recognition for it. I used to do it to see if I could get that recognition. Now it just won't get done without me. :'(

Better not to do things for recognition that isn't going to come. At least you aren't disappointed and resentful for that too!
Now, do what you want to do for yourself--what you think the household needs, and what you need first. Still... .this isn't likely to get a lot better.
She now needs me to remind her, convince and in her words "make her more confident in herself". This is daily now. I have been there to encourage but I think she is relying to much on me to "make it better". I keep telling her I can't make it or always be able to do this for you. Most of it has to come from you and I will be there behind you but you have the lead in it. Its draining.
You're drained. So back up a bit. You might also want to consider doing it backwards from how you've been doing it... .comes down to validation instead of invalidation.
If she thinks she's worthless, and you tell her that she's capable and successful, her FEELING is invalidated here. It cuts both ways--a boost in her confidence in her abilities, while tearing down her ability to believe her own feelings, as she feels one way and you are telling her that it is wrong.
Perhaps next time, you can validate how hard it is to feel like she's worthless or that she's going to fail... .without agreeing that that is the result, just acknowledging that the feeling is real, and it is a really sucky one!
If you want help, start by telling us something specific word-for-word that she typically says in this realm, and describe either what you would have said, or how you would validate it better for suggestions... .