“But the fruit of the Spirit is love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, self-control; against such things there is no law.” Galatians 5:22-23
Ask God to show you if there is anything in your attitude that is directly opposite of what you preach with your voice. If and when God shows you, make an effort to pay attention to your actions and change them so that your walk matches your talk.
Make an effort to be more aware that the people in your life and especially children are all ears and eyes and are constantly watching you. Ask God to help you be a godly example that will make them want to follow Jesus.