You drink because you are happy?
I think it's wonderful that you are happy with your life and family. Something to be really grateful for.
Have you considered that maybe you drink because maybe you are an alcoholic?
It's an addiction nothing more certainly not less and it has nothing to do with feeling in a certain way. I started drinking when I was a young teenager having fun with friends. So called 'happy times'. Food for thought I hope. Don't give up. I'm coming around for today at least.