" The environmental factors said to be most influential in shaping us were not those he had predicted. The essay suggested that mothers and fathers are often convinced they have a decisive influence over their children’s development, but they “flatter themselves.” Hilda argued that our fate is more likely determined by what she called our “unique environment”—the one we do not share with anyone, not even our siblings. It is the environment we seek out and create for ourselves, for example, when we find something which delights and fascinates us and drives us in a certain direction. "

― David Lagercrantz , The Girl Who Takes an Eye for an Eye (Millennium, #5)