Hi Andy,
I'm sorry to read about your father, that's heavy to say the least. Not sure what to say other than I'd wager he'd be brimming with pride right now.
The strength and courage you are demonstrating in your fight for permanent change is to be applauded.
To be prepared to acknowledge your own weaknesses and reach those dark places deep, deep inside, to heal the wounds and emerge as a better father, husband and human being is, for the large part beyond most men.
It makes you one of the few, not the many and I'm sure your father is taking every step of your journey with you.
Stay strong my friend.