Were you born a leader or are you a follower?

Have you ever wondered how certain people in life, are leaders and others are followers? Why is this? Is it the month and year they were born or is it in their inherited genes? Can a follower ever become a leader? Can a leader fall from grace and become a follower? If a persons future is determined by their birthdate, say children born in December are born leaders, then everyone would conceive their children nine months earlier to be a December baby. Question: if this occured, would this eliminate all followers, since everyone would now be a leader?