Unfortunately, I've never had any problem doing immoral stuff for most of my young life.
I learned early on I could lie effectively. Once I figured that out, the rest was a piece of cake.
The trouble with morality is how it's applied. The term is too malleable, and certainly cultural. In Japan, for example, suicide is morally acceptable because it is a legitimate way of "saving face". Please, let's not argue that point, I did read it in a period piece long ago, and I am not a Japanese scholar. Many people consider eating meat immoral.
Me? I've never considered my drinking immoral. I'd pick up again if that were the only reason to quit doing it.
On the other hand, if immorality applies to your own personal conviction to quit drinking, I can't argue with that. It's when it is applied broadly that I think it won't work for a lot of us.
FT