Yes, this is how it works.
This definately helps.
This also means: If you want to quit, get yourself busy / work. So you have another reason not to get wasted. It helps.
Also you earn money and are able to buy cool shit / yummy food etc. - reward yourself - which is also very motivating.
No.
Yes.
First I didn't drink because I was afraid I'd fall back into old habits, then I realised that being drunk really isn't something that I want.
I began to dislike drunk people, many friends among them, really acting like assholes / loosers.
Also when you think of it, it's actually not that much of a great "high", is it.