Tristan, Like others have mentioned, Piecing is the HARDEST part of these sitch's.
All those thoughts you mention are par for the course. I haven't been at this as long as Tomato, but since 07 and there are still times I struggle. Last night in fact. But like you mentioned, they get shorter and shorter and less severe as time goes by.
One thing I do want to mention. On another site I read quite a bit, it's said that at the 6 month mark post discovery (post bomb, post A, whatever you want to say), the LBS usually goes through a very angry period. This was a big help to me to know this because I was prepared for it and didn't let it derail our recovery, cause it could have very easily.
I think you should not overwhelm your W every time you're feeling down or angry, etc, but sometimes, yes, it's ok. If your marriage is going to be great in the future, your W has to accept her responsibility and help you deal with what you're going through. If she doesn't, there will be problems down the road.
If you want more encouragement, go to my thread. It's back a number of pages as I don't post as much as I used to.
H4U.
Hope4us
Me - 49, W 49 S22 & S18 Dday 9/4/07 W claims NC 4/7/08 8/29/09 - Divorce Busted. Lots to work through, but we're going to make it.