FA,
As said and you said too, it is better to be a healthy and shy person than a sick drunk with a failing body and internal organs that is sick and tired every day.
I'll bet that after six months or so of sobriety you find that you have grown some in spite of yourself. And can handle it now. Once you have stared your own slow suicide by drink eyeball to eyeball, there really isn't a whole lot that will rattle your cage.
Think about that.