I am. I practice vipassana though, not the brahma viharas.
YouŽll need what as an alcoholic you will unlikely have:
Self-discipline to practice ever day for a prolonged time. And ideally very good concentration skills where 4th jhana could be the measuring stick.
Assumed you practice diligently I donŽt think it necessarily helps to achieve the desired result. I turned to A.A. which got me both dry and sober. Thus my recommendation is to dedicate yourself to A.A. Check out Paul Hedderman on youtube ;-)
S