When asked whether I am an extrovert or an introvert, I answer YES. In truth, most people find themselves somewhere on the spectrum between these two end points. For those that consider themselves more introverted, take a look at this article by Ellie Nieves posted by Vault.
But, whether you consider yourself more introverted or more extroverted, I encourage everyone to take a look at these 12 Confidence Building Tips for the workplace (and for academics).
Article: 12 Confidence Building Tips for Introverted Employees
