I've done public speaking before, I of course avoid it if I can, but when I've done it my brain for some reason allowed me to do it. I think it may have been because l practiced it over and over and it became kind of akin to how we can sing fluently. And it was like, if this makes sense, not me. Like someone else was doing it on my behalf. Please don't take this as advice, please do seek a professional's opinion but this has been my experience.