When you see that the devil has your child by the throat, instead of getting angry at your son for straying from the right path, turn to God. Learn to turn to God in prayer for your children. Instead of scolding or condemning them, ask God to intervene in your struggles with your children.
Porphyrios of KafsokalyviaMore Porphyrios of Kafsokalyvia quotes
Who can do you harm, my child, if you have Christ inside your heart. Turn your eyes towards Christ. You don't become saints by chasing away the evil. Forget about the evil. You should actually turn your eyes towards Christ and He will save you. Instead of standing at the door and shooing away the enemy, despise him. When you see evil approaching from one direction, you softly give your attention to something else. So, when the evil is coming to offend you, give your interior strength to good, to Christ. Plead: 'Our Lord Jesus Christ have mercy on me.' He knows how to give you His mercy and in whatever way that is best for you. And after you are full of good, then you no longer turn your attention towards the evil. With the grace of God, you become good. And then the evil is unable to find a place to stand and disappears.
Porphyrios of Kafsokalyvia