>Muscle relaxants may fix a addiction to alcohol at a higher rate, but likely do nothing to change an addictive personality.
addictive personality traits are to a considerable degree genetic, and even the learned parts are usually solidified in adulthood. It is almost impossible to change one's personality, this isn't a good pathway.
Stopping people from engaging in addictive behaviour is really hard, that's why the most effective way of managing addiction should be chosen. It is not a battle to be won, it is a disease to be treated.
Muscle relaxants may fix a addiction to alcohol at a higher rate, but likely do nothing to change an addictive personality.