Mari, As you know I don't have Bipolar Disorder (however I certainly am a highly sensitive person in many respects and have other conditions) but I am an introvert and the last thing I can imagine wanting to be is an extrovert. I'm quite happy being the introvert that I am. Just speaking for myself I can definitely say I wasn't made into an introvert by circumstances in my life. I was born that way although circumstances probably have affected the way that I view the world and the people in it and to a degree have made me more cautious about social interaction which never has come easily anyway.