The "introvert/extrovert" dichotomy isn't a particularly great measure. We are in numerous ways in numerous situations. There's no real "true" person in it. But yes, we can feel like we're kept from doing what we want. I'm sure we've all felt stutter be like that. It doesn't mean we're necessarily "more real" without it (and in truth, counterfactual descriptions of reality tend to amount to wishful thinking in these cases).