I too have had mini-anxiety attacks thru this ordeal. Moments where I have to take deep, deep breaths, over and over, to try to calm myself down, as overwhelming feelings of impending doom and sadness and hopelessness wash over me. Deep breaths, and prayer, and reminders from NOP and from all of you, usually help me get back into my better place, and back on the driver's seat of the Hero Train.
I think it's important to have a calm, informed, detached view of divorce, and have it on the table when talking with a wayward spouse, so that they can see you're strong and not freaked out at the possibility. In fact, I think it kind of freaks MY WIFE out when she knows that it's a possibility for me as well.
But I won't do anything yet, other than seek some legal advice, so I an work on the "informed" part of that equation.
Your "yoga" story is amazing. The more I go thru this, the more convinced I am that God places certain people in your life at the times and the places where you need them, and they come with the words that you need to hear at that given time. I rest on 1Cor. 10:13 and on other verses that promise that God doesn't give us anything that we can't handle, but I do think that we have to open ourselves up and allow others -- even strangers -- to help us in our lowest moments.
You will have my continued support. Our situations are very similar in some ways, and yet very different in others, but the similarities and the shared pain have made me follow your sitch recently.