Once you uncover the history ...

Once you uncover the history of this pattern and trace its roots, you will see that your reaction in the present moment is really a reaction from the past, a shadow character's attempt to protect you from reexperiencing an old emotional wound, which instead sabotages you in the present.
 Connie Zweig

Quotes from the same author

There are certainly statistics which show that most people who become sociopaths, who become homicidal, who become child- abusers, have had a history of incredible suffering. This is what we call the transmission of family sin, in which these unconscious patterns get carried on for generations in a legacy of pain. When they are not brought to awareness and worked through, each generation just automatically enacts them.
 Connie Zweig
The rewards are profound. Shadow-work enables us to alter our self-sabotaging behavior so that we can achieve a more self-directed life.
 Connie Zweig