Your child deserves to see and believe that there is respect between his or her parents, even if there is strong disagreement about every conceivable issue. The following are list of ideas and suggestions to help you accomplish this very difficult task. Never attribute negative behavior of the child to the other parent's influence. Parenting is not a competition. Children naturally and normally are drawn to one parent over the other at different stages of development.
Children use their radar to feel the atmosphere of the parents.
Your mood, attitude and beliefs don't have to be expressed to be known. If you teach them to hate that person, you are also as likely to be teaching them to find reasons to hate you in the future too. Fight the urge to accept the child's natural ambivalence toward either or both parents as a reason to avoid the relationship with the child. A child's job, from birth on, is to grow into a separate and distinct personality. Accept the differences in your parenting styles.