Talk to someone in the family. Talk to another parent. Listen to what they say, they may have some good ideas about other ways to handle the problem rather then blowing up at your child. Take a Parenting or Nurturing Class. Good parenting, teaching, and nurturing skills can be learned.
Children behave and are happier when they are praised and told they are loved.
Improve your own life . Seek help for your own problems. Then you will be better able to provide the best for your children. You may need to seek counseling to help you deal with the pain, anger, bitterness, and frustration of divorce and separation, its part of a healing process that will allow you to love your children. Your children are precious and special.