Edward M. Hallowell said this quote

Families, by and large, like most groups, resist change. If one member of a family wants to move away, this is regarded as a betrayal, for example. If one member of a family is fat and tries to lose weight, often other members of the family will sabotage the effort. If one member of the family wants to get out of a role he or she has been playing for years, this is usually difficult ot do because the rest of the family tries not to let it happen. If your role is clown, you remain the clown. If your role is responsible oldest child, you probably keep that role within your family for your entire life. If you are the black sheep, you'll find it very diffcult to change colors in the eyes of your family no matter how many good deeds you do.