It requires a lifetime of sensitivity to a variety of human needs. You are the most formative faith role model in your child's life. What you DO is even more powerful than what you say. Pray with your child and for your child. Remember that you, too, are a child of God.
All parents make mistakes.
Ask for and accept forgiveness. All parents need help and support for this most challenging of all jobs. Build a network of support. Seek professional help if you need it. Time for study, for reflection, for reevaluation, and for caring connections to others are all part of the abundant life that is ours in Jesus Christ.