You must be a developmental stutterer,the group which is mostly investigated and analyzed by linguistic pathologists in a consistent growing depth and I think developmental stutterers can apply techniques such as making fists,protruding underbellies or talking to a portrait on a wall to smash anxieties and fears in dialogues.Whats more,I heard holding an item between the upper and lower teeth can entirely destory stutter although its not realistic when it comes to real speeches,but you can control your mouth so close to nearly be closed entirely.Also these are delicate techniques I myself managed to find out