Sorry to hear.

Check out Crucial Conversations (https://www.amazon.com/Crucial-Conversations-Talking-Stakes-...). It's a framework that I've found immensely helpful.

If interested, I do recommend you read the book, but you can still get something out of this video: https://www.youtube.com/watch?v=EFaXx3pgaxM (it's a summary masquerading as a review).