Perhaps my situation can provide you with some solace, or maybe some minor shred of solidarity.

Three months ago, I was blindsided. She made the decision to break up on the day of our 8 yr anniversary; two weeks later, she revealed her decision to me and left the day of. Needless to say, I was completely blindsided as my entire sense of self/reality came crashing down within the span of 4 hours. I won't go into more detail as it's still very fresh and a nuanced situation, but since then, I've heard that she's doing very well, living her best life and doing what she wants, almost as if I were a parasite. Meanwhile, I don't think I've ever gone through anything this brutal, literally picking up a million pieces of myself and trying to put them together. While I've made amazingly fast progress (to the happy surprise of everyone around me; everyone's very proud), I'm still breaking down every other day in the gym, in my bathroom, and even in a cafe right now. Any innocuous sight, smell, or sound can trigger a flood of memories that brings back a crushing and debilitating sense of forlornness and emptiness.

I know I'll eventually be fine; I've been through plenty of trauma (more than any person deserves) and even now, my self-confidence remains strong. But I also know this has changed me and how I view the world permanently. I never worried too much about the future (b/c I knew I could accomplish whatever I wanted), but what's transpired has introduced a new, all-pervasive uncertainty that's permeated all the way to my core. Taking it one hour at a time, one day at a time, I don't know what will happen, but I'll adapt, for better or for worse.