Coping with the Borderline Behaviour of Our Children

How can we as parents cope with our Borderline children or adult-children? Somehow, BPD has robbed these children of reality on all levels. I don’t think our BPD kids realize how far out there they really are. It’s as if they truly believe normal people live the way they do. Our parental examples do not seem to make any impact or bear relevance to their lifestyle.