I’m sorry your wife is going through this.
My advice to myself is to keep remembering that this will be over one day, God willing. And I pray. Plus, I do mindfulness as much as I can and positivity (not letting bad thoughts or worst case scenarios take over).
One thing that I have been doing almost daily is deep breathing exercises. The yoga breathing is something I learned from my Yoga teacher. I do that with eyes closed while listening to Zen music. Once it gets me yawning (shows that the parasympathetic nervous system kicked in) I know that I am relaxing and it is good for my brain.
Finally, I think your encouragement that this is going to be over one day is very important for her to be able to go on.
Asli.