How do I cope with/recover from divorce?

My wife of 3 years just told me last week that we're getting a divorce. It completely blindsided me, as there was no marriage counseling or communication about the marriage having problems from them before this, but I can't say I don't understand at least some of their reasons. They made it clear that there was no fixing things or repairing the relationship. They're leaving no matter what I do.

Other than the suddenness, they seem pretty willing to be amicable and compromise as needed, at least to an extent. We won't be able to properly separate for a while it seems like, though it's hard to predict the exact timeline at this stage. I'm currently planning a too-expensive last-minute flight back to the States to stay with my family for a little while, since I need some distance and they can be a source of comfort.

I can obviously hire and rely on a lawyer for handling the legal side of things (which will be complicated, to say the least), but I'm truly at a loss for how to handle it emotionally. I'm in my late 20s but I've never even been broken up with before this. Go hard or go home, ig. I hope there are others here who have good advice to share for this situation, because I don't know what to do now that the bottom has dropped out of my life like this. It feels like my whole future is gone. I was in a bad depressive episode already and obviously that's not been improved by this.

(Also, if one of our closer mutual online friends who lurks here is finding out this way -- sorry, she owns the Discord server so I can't exactly bring this up there. I welcome DMs from y'all.)