Quiet Leaderáby Sissel Heiberg is the ideal textbook to help introverted business professionals ÔÇ£come out of their shellÔÇØ, by using their introversion to improve their leadership. Unlike the traditional leadership books that focus on ÔÇ£fixingÔÇØ introversion, this textbook provides the toolkit to nurture your strengths as a leader and manager.