To be perfectly honest, I don't lend much credence to those terms (the dichotomy of introvert/extrovert). I think it's something that blew up on the internet, mostly, because it's all too easy to relate to. So please, don't limit your self-understanding to these to simplistic states. - Your stutter doesn't _do_ anything. It's only there (with some frequency or other) when _you_ do something. So, you _don't_ do it, because you fear that you'll stutter (which makes you feel like a freak or get exhausted). - But that's a choice. I don't mean to be rude here. But it is a choice. You choose not to speak. And I understand that, because it's easier. But in the long run, you're feeling trapped. - Managing a stutter can be improved with the help of professionals (and I urge you to try that, if you haven't - or try again, even if you have). But you've got to _want_ to speak - _with_ a stutter - regardless of what it's going to feel like. It's stutter, and it's not exactly what you wanted... but you're _doing_ something. - Don't get trapped!