If you are having difficulties with the other parent, do everything you can to resolve your differences and move forward.
When in a dispute, your decisions become clouded by anger and emotions. Don't allow yourself to be lured into using the Family Court to apply for sole custody because you believe that you are the better parent. One day when your children are grown up they will tell you of the upset to their life caused by your selfish actions as the Vincenti sisters did to 60 minutes.
Even worse, do not allow yourself to consciously or unconsciously Alienate your children as one day when they realise what was done to them they will be very unhappy that you deprived them of a loving parent for their childhood.
If you have major unresolved conflict with the other parent, the damage to your child IS permanent.
See the video from the AFCC multi award winning UptoParents.Org program below by the highly experienced Family Court practising Clinical Psychologist Dr Sheehan in the US state of Indiana at 6 minutes 45 seconds onwards:
If you lose contact with your child during divorce due to one parent alienating the child from the other parent (ie 'Parental Alienation') this is quite likely to be lifelong.
Parents who can get through their divorce and successfully co-parent with the other parent will be appreciated when their children are grown up as in the above video.
Excellent brochure by the Parental Alienation Awareness Organisation on Parental Alienation.
Excellent brochure by Time To Put Kids First on the value to children of shared parenting.