I know this is an old post, but I am just now finding it. I am an extreme introvert. I have been told my entire life that I'm too quiet. I have been a nurse for many, many years. I have earned respect from my co-workers, but yet I am still told that I'm too quiet by others in the field despite my accomplishments. I would highly recommend the book "Quiet: The power of introverts in a world that can't stop talking" by Susan Cain.