« Parents have no choice: they have to live well with their child jealous children and convince themselves, amid the cries and tears, that jealousy is part of their normal development. It offers an extraordinary opportunity to surpass itself, progress and build. Denying it is the safest way to strengthen it, sometimes to the point of turning it into a pathology leading to sleep disorders or character disorders. Repressed or repressed jealousies fill the offices of psychiatrists and psychologists. For the jealous child is convinced that if the parents cannot bear his jealousy, it is because they prefer "the other". »

« To calm things down, I advise parents to separate the two children by having them stay alternately with their grandparents. This technique is always useful when family relationships are strained because grandparents often provide high quality individual support. To prevent the child staying at home from feeling abandoned, parents are invited to take turns staying, allowing for a one-on-one meeting with the isolated little girl. »

« I recognize that being parents of teenagers requires a great capacity for self-denial. Indeed, parents are often the first victims of tensions between brothers and sisters. This is why their arbitration in the conflicts that arise within the siblings is crucial. It is fundamental to prioritize dialogue and to rule out authoritarianism. I always recommend that those who come to me be careful, taking a stand, not to suggest that they systematically support the youngest. I also advise them to control their words, to banish the little murderous phrases that are often guilt-ridden, aggravating feelings of frustration and inflaming resentments between the protagonists. Playing on the register of shame is a dangerous game. Parents have no choice but to be patient to listen to each other's story and recognize each other's wrongs. The ideal is to solicit the ability of the children to find a solution themselves that, as far as possible, will satisfy everyone. »