i saw where you posted on brit's thread that you feel like you are starting over again. i am sorry you are in so much pain.
i felt that way too... my W said at one point that she wanted to work on things and was confident we would be able to... this was before OW and it lasted 3 weeks until she started seeing OW..
i felt like i was back at the beginning and i got scared.. but i rebounded much, much quicker than before. what i had learned here and by reading and working on me helped me recover quicker.
there are still moments when i feel like i am back at the start... but they are fewer and shorter
i hope that is the same for you. ((( )))
Me(f): 51 W: 41 DP:8 M:3 T:10 "W not happy" 7/11 D final: 8/13