If the parents can keep this fact in mind, then they will find it easier to change from being a couple who are parents to co-parents who still love and care for their children, even though they are no longer a couple.
There is no handbook or scientific formula for successful co-parenting, or even a survival guide that will able to help each and every set of co-parents.
No matter what precipitated the break-up, co-parents benefit from treating child-rearing issues like business deals and avoid letting emotions cloud their judgment during any co-parenting communications.
Co-parents frequently use gifts to gain favor with children or to assuage their guilt.
If the relationship is too strained for the co-parents to have a meeting in the beginning to discuss all of these matters, try to involve a mediator or some other neutral party.