The cause of stuttering isn't known. There is something haywire in our brains that doesn't allow us to talk. You can be the most anxious person on this planet and that isn't the reason why we stutter. The reason I think this is because for many years I self medicated to stop my stuttering. There are certain prescription drugs that cure it, for me it's speed. It's something in our brains. Do not be like me. I still stutter but now I've lowered my life expectancy because I did so many drugs. It's not worth it. It's a temporary cure. You have to realize that majority of people don't give two fucks that you stutter. It's a personal embarrassment but no one else cares. You know that death is forever. It's the end of your existence for the rest of eternity. Lights out, you're done. It's terrifying. You want your lights out for the rest of eternity this quick? Don't be crazy.