I am someone that lived with anxiety issues my whole life.
I was not a drinker or an addict of anything. I just had horrible anxiety.
I got therapy for said anxiety and learned how to cope/treat it myself...techniques that helped keep it at bay.
I haven't had a panic attack in over 2 years. I used to have them almost daily.
I learned that we have 3 minutes from the moment anxiety starts until a full blown attack. 3 minutes is all it takes for that chemical to surge through our bodies. If you catch it before 3 minutes, you can talk yourself down.
I don't think this is answering your question. I'm sorry. I'm just speaking from someone who had anxiety issues.
To help keep it away, I'd go through my check list---- bills paid-- check--kids ok--check--food in fridge--check...etc...
I also learned how to live in the moment. Right now everything is ok. RIGHT NOW I am ok.
Breathing and centering also came in handy. Becoming my best friend...learning to love myself and respect myself. Anxiety didn't serve me. I had to learn how to let it go.
They have therapy for anxiety, it could serve your husband to look into it if it's possible. It truly helped me.