Thanks FeelingGreat for your response. I think you're 100% right that he is afraid and is worried that he won't be able to do it and also that he feels drinking is his comfort. He has mentioned to me that a big part of drinking is so he can "forget"
As I'm not a drinker, it's hard for me to comprehend this especially when I'm sure he knows it will sooner or later affect his job and possibly lose it.
I feel I have a lot to learn from this site and hopefully I can understand more what he must feel. It's so sad to watch someone do this to themselves.