For the addict or the alcoholic self-knowledge only goes so far. It will not help in those strange mental blank spots we can experience. At certain times the addict or alcoholic has no effective mental defense against the first drink or drug. In those cases neither he nor any other human being can provide a substantial defense. His defense must come from God. That is why we do the things we must to stay in fit spiritual condition on a daily basis. Trust god, clean house and help others.