Back off gently and let your children use their agency. Teach them correct principles and let them govern themselves. They are equipped to handle these decisions because they are prepared to be on the earth during this wicked time.
"Fathers, provoke not your children to anger, lest they become discouraged." from Teaching of the Prophet Joseph Smith, p. 89.
Create an atmosphere of love and acceptance, so your children know that they can come to you and that you will love them no matter what.
Be gentle and kind when disciplining children. Try "Son, you let me down".