My prayers with you and the family during this time.
I try to keep a level head and try to remember that things could be worse. I keep focused on my work to be sure that does not become an issue later on down the road and I try to remember that this is all part of my faith being tested. I slow down a little when I do things to be sure that I am not reacting in a bad way b/c of my situation.
Although not for everyone, I love the gym so my workout time allows an opportunity to clear my mind and blow off some anxieties.
If the situation is really bad (in my mind) I talk about it, just to keep from letting things build up, such as what you are doing now.