I typed out a long reply to you last night and then deleted it. It wasn't quite right. I hope this one is better.
You are in the thick of it right now. This is a horrible phaze and somrtime I look back and wonder how I survived. I called it my "make it till" period. I would wake up and try to make it till work, then nake it till lunch, then the end of the day, supper, bed, and finally I would try and make it through the night, onlgbtk repeat the process tomorrow. Those bite-sized chunks of the day were all i could manage.
The despair I felt was heavy, palpable, like a thickness I could pass my hand through and ibthought it would be with me forever. Then I met a monk who said something profoundly simple and life changing. He said,"You are not your feelings. You are simply experiencing your feelings. When you are done learning from them, they will leave and you will experience new ones". Its acsimple concept, but it changed how I saw myself and my healing.
I still struggled. Sometimes I could only hold it together until I put my kids to bed. After that, I gave myself permission to fall apart, out of anyone's sight.
It took me years to laugh again, I think about 3.5 years. I had no idea what joy was. I knew it was a thing, but I couldn't explain it. But, at the 3.5 year mark, I was playing pictionary with some new friends and my teammate drew what was supposed to be a potato. I found it funny, hilariously funny and I laughed. I couldn't stop. The flood gates opened and all of that bottled up emotion came out. Then the whole room started laughing. It was a cathartic moment for me.
I wish I could say I was fine after that. I wasn't. But I was on my way to better. The real healing began when I got my own place. It was all mine and at last I could provide a home for my kids and myself. My friends noticed the change. I was lighter, more present,less brooding. And I laughed often.
I'm now at the 7+ year mark and I would describe myself as healed... a little bruised, a little beaten,but healed. My WW'S A is now just something that happened in my life. Yes, it is unfair, but it no longer defines me. I can think about it without the emotional hold it once had on me and that's a good place to be.
The betrayal that happened to you will always be a part of your life, but it does not need to be the defining part. You get to decide those. But, it takes time and patience. I remember people telling me that I would come out of this a stronger person. I wanted to punch them in the face... but they were right. Even though I am less trusting and more cautious, I have a greater capacity for empathy and charity. I try to listen more than talk. I seek to understand and realize I don't have all the answers.
My advice to you is to give yourself some grace. Allow the healing to take place at its own pace. Recognize that it is nonlinear and you may need to circle back and reprocess things you had thought you had dealt with. And finally, don't compare your life to others. You have no idea where they are at when they are alone and with their thoughts. My ex-wife has never been alone since we S. She has never had the benefit of truly encountering herself in an authentic way. I feel sorry for her.
Anyway, I hope some ofvthis helps in at least a small way.