Recognizing your fears and where they stem from is a big step. I like what you posted about that.
Remember right now this HAS to be about you. It doesn't feel natural, but it's the way it is.
Let go and trust.
It sounds like you have a full plate. You have some beautiful children who are watching their father, learning from their father. Focus on them, show them who you really are and teach them how to walk through this painful valley with strength.