I speak often at my job, sometimes over a radio, and I remember my first job dreading this (I had to use a radio then, too) but after awhile I got over it. Exposure helps ease the burden and makes self-acceptance tangible, and part of facing my fears is also the realization that I have every right to express myself like anyone else. You have to remember this, even when there are so many signs telling u otherwise - like when people cut me off or finish my sentences for me. It's hard not to overthink those things. Sometimes I won't speak if I feel I will stutter because of practicality, like if I'm passing by a guest and want to say "good morning" but block on the G, I'll just smile and say "hi" because I don't want to essentially stop and stand there? or keep walking as I'm blocking? So ultimately I think, we have to create our own space, and if some people aren't willing to wait, then they aren't worth your time.