You know... while it's a really depressing thought -- the "This is how it's going to be forever" -- it's actually a thought that can help you keep reasonable expectations.
I somehow expected AXH and me to settle into some kind of "normal" divorced relationship. Why on earth I thought that, I have no idea. But I actually had to have a therapist spell it out to me: Everything that annoyed the hell outta you when you were married to the man is going to continue annoying the hell outta you when you've divorced him. The difference is, you don't have to deal with it 24/7. But you're still gonna have to deal with it. And if you expect that, you won't get so bent out of shape every time it happens. You'll get used to it and be able to roll your eyes and go "herewegoagain..."