Family history enlivens the past, enlightens the present.
Everyone shares the family history of humankind. Personal family history includes the decisions, actions and attitudes in the recent past, and the present, of people who influence our own ways of being. Some of these people are biological relatives, some adopted, whether formally or informally. A parent's close friend, or hot enemy, may have as much impact on a family as kin. Public figures that were or are much admired tell us of family aspirations and ideals. The early loss of a parent, the loss or gain of a job, or the management of a business can impact several generations. So can the effect of an era, such as the Great Depression of the 1930's, or the counter-culture movements of the 1960's.
Nature and nurture work together in each person's development. Humans are social beings, generalists, extremely adaptable. They are also loners, specialists, and rigid.
We are not limited by our genetic and social givens, but they do give a structure on which we build a life by our choices today.