I remember first day of speech in college when it was my turn to speak. I got up, walked out the door, and dropped the class.
It was hard to even work up the courage to post this comment. But i did. Baby steps.
That's the spirit!
And it will definitely be baby steps at a time, you just need to keep going.
The Charisma Myth book has plenty of interesting research and content, but by far the most important things are the exercises. At a basic level they are about being very aware of your internal state and then learning how to change it. When I first started going through the exercises, it kinda felt like I was learning a new language, and it opened a whole new world of possibilities.
Btw, if you just want to test it out before buying the book, check this summary[0] out and follow the "Three quick tips to boost charisma" mentioned in the second bullet of chapter 1.
0: https://github.com/mgp/book-notes/blob/master/the-charisma-m...