I think that's the hardest first steps to take, to let go enough to not REACT to our spouses spewing/emotions/actions.
To PRO-act in a way that we can separate ourselves from the roller coaster and still not let ourselves feel like every interaction is a make or break deal.
You in SoCal where the weather is always nice, giving you more things to do? Or NorCal where the weather starts to limit some of your options? Do you have a family base close by? Who/how are you confiding in? Be careful with that part. You need support, but you really don't want anyone that is picking a side, that's not gonna help.