I'm about half-way through this online cognitive behaviour treatment that I've been doing the last few months, to treat the anxiety, related to my stuttering. I'm finding it pretty beneficial.
In a nutshell, the idea is that social anxieties are driven by causal thoughts (I will stutter badly in this situation, I can't talk to this particular person, people will think I'm stupid etc), which are then maintained by safety behaviours (keep answers short, point to things rather than talking, try to avoid difficult words, avoid eye contact etc).
They then set me behavioural experiments, where I go in to a situation on purpose, that I'd usually run a mile from. I make a bunch of predictions on the outcome beforehand, then go in, trying my best to discard all safety behaviours.
Afterwards, I evaluate how it went, and whether my predictions were correct. And they haven't been-- I had predicted very negative outcomes, which never eventuated.
So this is all coming as a bit of a revelation to me; that I'm wasting a lot of energy cowering from perceived dangers that aren't really dangerous. experiencing this first hand is very liberating.