I was in the Navy and i got kinda buzzed one night at a party and everyone was surprised that i wasn't stuttering at all. It continues to this day. But for a job interview, i couldn't do it. My opinion is try different things such as meditation, spent some time in a zen monastery and stopped stuttering for a month but when i got back home, BOOM, right back to stuttering. Its your body, you have to learn to control and understand it. Unfortunately it just takes awhile.