It sure looks like you have come to the end of the road. But don’t worry - us humans, we’re able to adjust to everything. When I stopped drinking, I could not imagine that I would be doing this for good. Now, 6 months later, so much easier - of course there have been changes to my routines and the loss of drinking buddies, but at the end of the day it’s about managing a transition just like any other. Before you become a dad, you probably couldn’t have imagined giving up certain things, but then you did it to become a good parent, didn’t you?
What you are facing is fear of the unknown. Take heart - you’re doing this for your family and I give you my word as a brother in arms that it will turn out to be the best thing that you have ever done!