On the stages of grief-- I found another version that went denial-bargaining-anger-depression-acceptance, and that was a lot closer to my own path (bargaining before anger), in case that resonates more with you.
I also second RTC on the anger being an important part of the whole process. People here really questioned my lack of anger (as did my IC) and I thought I was past it. Turns out I had just shoved it down and when I started to open up that box, it was an intense, enormous well. I bought a punching bag and did a lot of angry journaling which really helped though I think I wasn't pleasant to be around for a few weeks. My IC helped me through this and I definitely recommend exploring this with your IC too. it still comes up for me but in manageable chunks and I now have strategies to work through it and let it go.
Me (46) H (42) M:14 T:18, D9 & D11 4/19 - 12/19: series of escalating BDs 9/20 - present: R and piecing