I used to be a lot like you. *A lot.* I would avoid saying and doing certain things to avoid speaking in general. Then I realized that even when I do stammer, nobody really cares. They all pause and wait for me to finish. I’ve been practicing a lot over the years in my room and I’ve gotten a lot better. I actually work in customer service now. Sometimes I’ll slip up and take 10 seconds to say one word, but nobody ever seems to mind. :) My best advice to you is that not as many people care as much as they think you do. Watch some YouTube videos and Ted Talks, they’re extremely helpful!