The acquirement of spiritual wisdom does not necessarily prevent us from making worldly mistakes; but because it develops the qualities that will prevent them, and because it takes to heart the lessons of experience, humbly and receptively, it does reduce the frequency of those mistakes.
We don't talk much about humility in AA, almost never use the word. Maybe that is because, as the spiritual adage has it, if you think you are humble, you are not. But I see enough of freedom, serenity, healing, and unselfishness around me to think it must be hiding there somewhere.