Always feel free to share your thoughts with us. It's more than okay to have them, and any little bit will hopefully make you feel less alone. You can always talk to me as well, and I'm sure others here would be happy to do the same. You could also do things like maybe making small talk with the cashier at the store, for example, or the receptionist at the doctor's office. I know that can be scary too, but I'm sure they'd be happy to know that someone cares enough to talk to them. And even if you mess up a little, they'll probably be too distracted thinking about wanting to clock out to care :P And who knows, you might never see them again anyway. Maybe do the same with your classmates.
Just try to start small. Tell yourself, "This is how I'm going to fight my anxiety today, I can do this, I am strong." And after you do it, even if it feels like you could just die of embarrassment, force yourself to think instead, "OMG, I did it! That actually wasn't so bad, I want to do it again! c:"
I know it's not easy. I do this, and I still struggle with it. But I'm better than I was before, and I'm sure you can be too *hugs* I really hope this helps, even just a little bit <3