Agree to disagree and get along -

No matter what has happened between you and the ex, please agree on the fact that you have children to raise and you must set aside your differences, emotional bruises, and frustrations in order to successfully parent your child. This may be difficult in the beginning of the split, but keep trying to create positive communications lines between you and the ex. It might even be necessary to visit a parenting coach or a therapist together in order for you to get to a point that will condone positive communication. Whatever it takes, try it. It's incredibly immature to refrain from holding civil, constructive conversations about parenting the child/children you once parented together. Remember: Your child is watching and learning from your actions and interactions every day. Think about the messages you are sending and whether or not you are providing your little people with tools that will assist them in building a positive, emotionally secure life or tools that will assist them in building a life that falls apart in inclement weather.