I'm not sure if I posted to this thread earlier, but I'd like to chime in again as you are in a dark place, a place I know very well.
I am 5+ years out from Dday1&2, with the second being when my universe changed forever. I cycled through emotions, sometimes rapidly, but the worst was the sadness. It felt palpable, like a thing I could reach out and touch. Worst of all, it was opaque and I could not see another life past it. I was convinced that this would be my reality from now on.
After Dday1, I was planning on ending my life. I had gone over my insurance papers to see if my family was covered in the event of an "accident" and had methodically researched a method, picked a place, and even put together a secondary kit in the event that I was not able to die quickly enough. Years of military training taught me to plan carefully I guess. Instead, I reached out for help and got IC, meds, a d time off work to heal. It was a very tough road, but after a while, I was determined to reinvent myself.
People told me that it would get better, but that advice just made me angry. I wanted it better now, damn it! Plus, how could they know? My pain an my reality were unique. Who were they to tell me anything?
After Dday#2 and filing for D, the first real milestone for me was getting my own apartment. It was a tiny two bedroom and with two kids, I was forced to sleep in the dining room (we called it the nook). I bought a used bed frame and a new mattress that was only mine. Then I bought a coffee mug with the word "peace" emblazoned on it. The word became my mantra and I am drinking coffee out of it as I type. Despite the pain and shit I was going through, I had peace, something that was lacking in my life before. And I wrapped myself up in that feeling. It was comfortable, like an old sweater on a cold day.
Things got easier as time went by, but it was not smooth, nor linear. There were good days and bad. Hell, I once fell into a rage and then collapsed sobbing on the kitchen floor because I could not find a reusable food container. I ended up putting a large dent in my instapot which remains with me as a reminder of how far I've journeyed.
Today, I have my own place, my kids are graduated, and I am even dating a wonderful woman who seems to adore me, though I think she may be delusional. My EXWW's A has changed me on a quantum level. Some changes are good, but there has been a cost, I won't lie. I don't really do happy anymore, though I feel it at times. I would describe myself as mostly content, and that's okay. It fits well with peace.
So after 5 years, I would say that I am in a good place. I stopped the meds, as I don't really need them. When I get sad, I've learned that it's a transitory emotion and I walk through it, allowing it to remind me of just how far I've come. This diatribe I've written is just to show you that it is possible to get here from there. You just need to give yourself time and grace. Don't succumb to the despair that you have every right to feel. Just realize that that feeling is not who you are. It is just what you are experiencing right now, and you still have a plethora of new experiences on the horizon. We are all rooting for you...
PEACE.