I have felt and sometimes still feel every one of those things that you list. I suspect we had a similar marriage. I think we both had co-dependency issues. It happened organically, but if I ever have another R with anyone then it won't be happening.
So what to do?
Nothing
Force / fake the detachment until it becomes the reality. Divorce doesn't force detachment, but time and positive non-action will help.
I am not ready to D either. I would have happily waited until I felt stronger and had grieved enough, but I don't have that luxury.
Use the advice here from FS and Dilly and allow yourself to grow strong. Every day it gets a little bit clearer and a little bit easier.