Hi TJ, you already know I understand the scared bit and without a doubt, here for you!!
But just a thought..............it's going to be quite a change being home (in some good ways as well but.....) so do you think you can write down some of the things the hospital has given you and build them in as far as you can/as is comfortable at home.
I'm thinking structure as a basic one.............maybe try to have some planning to your days (I mean even keep mealtimes etc the same as they are now when you're home if it helps!!).
Although give yourself the same kind of "rest" as there, don't go trying to throw yourself into everything at once!!!!
It's given you points of contact like talking to the nurses.............maybe build something like that into home e.g. regular phone calls or talks with your wife or friend.
It's given you some safety...........maybe look at how you can remove some items from your home...........like you pointed out the- was it a small knife?- to your wife on one visit. At least until you've settled back into home a little.
Well you get the idea....................
And maybe look at reducing what you know might be triggers when you get home e.g. things you feel you should be coping with/doing but aren't quite ready to do yet.
And got a list yet ().........a list of things you're going to be doing/trying if you're feeling/start feeling............if you want to.........?? And I hope talking to us is going to be on there somewhere!!!
But keep up with the talking about things, hey?? It might well be hard at times to start with, so remind yourself you deserve all the support there is.

Alison