Maybe [this](https://www.reddit.com/r/Stutter/comments/816mga/what_are_your_exercises_to_relieve_stutter_and/?utm_source=reddit-android) will help. At the end of the day, you have to give that talk and from my understanding, the biggest fear we have is "what others will tell". Ask your friends what they think about you when you stutter. I promise you you'll be surprised by their answers. Good luck! 😄