So let me challenge you: go to a coffee shop, and voluntarily stutter with the barista. Look them in the eye, make sure your voice is loud enough, do not look embarrassed of your stutter, and order your coffee, "Hi, cccccan i get a rrrrregular ccccoffee, please?" If necessary, repeat yourself, but continue to stutter. Whatever conversation follows, make a resolve to continue to stutter voluntarily. Just. One. Interaction. It will be scary before and during the interaction, but once you've completed the interaction, you should feel much more confident. Let me know how you feel. When i did it for the first time, in 35 years, i felt a huge burden lifting from my chest while speaking.