Heart event

So I had what the doctors refer to as a heart event. Now, I am supposed to keep calm. I have blood pressure medicine.

How can I keep calm when a child is constantly doing things he shouldn't be, taking things that aren't his, and hoarding garbage?

The ODD and OCD in him will make both of us crazy.

I have to remove myself from the situation, over and over again, as I really don't want the heart event to recur or become something more severe.

I was told by my daughter that out of all of the kids, M was the only one who was not upset about me being in the hospital. Is it because he doesn't understand? He is only 9, yet...