As far as we know, stuttering in incurable. Since it's a disorder and not a disease, speech therapy or even regular therapy is your best bet. Something that helped me is learning to live with my stutter. I was embarrassed talking to others but I just kept putting myself out there and they people who have a problem with my stutter aren't worth being in my life anyway. Stuttering is extremely difficult but it shouldn't be seen as paralyzing, even though it seems that way. It's an obstacle that can be managed