Breaking the cycle
When we become aware of our tendency to repeat our parents' patterns of behaviour and patterns of relating, we have much more free will to decide whether we would like to follow the same pattern, or to free ourselves from the conditioned way of being and relating, and to live life differently.
Terry Real put it succinctly...
Family pathology rolls from generation to generation like fire in the woods, taking everything down in its path until one person has the courage to extinguish the flames. That person brings peace to its ancestors and spirits the children that follow.