Don’t overcompensate for your partner.
When one parent favors one child, it’s often natural for the other parent to go out of her way to favor the other child. But as Sonna points out, “Overcompensating can in fact create more problems than it solves by increasing marital tensions, which can make the less-favored child feel guilty for being the cause of his parents’ conflicts or the household tension.”
If your partner favors one child, talk to him in private about working on his relationship with the other children. If this is not effective, you may need to speak with your child as well. “By helping your child understand that the rejection is not his or her fault, you can provide invaluable support,” says Sonna.