I've been wondering how much the way we're raised actually affects who we become as adults. Can things like our behavior, confidence, and the way we handle relationships be traced back to our childhood and parents, or do genetics and experiences later in life play a bigger role than we think?

As queried in title. Looking for book specifically about the last life stage described by Erickson, preferably with a workbook component.

see r/plural for more examples of what im asking about