Your son or daughter may live, eat, and sleep in your house, but is he/she a long way from home spiritually? Nothing can be as discouraging for parents as seeing their teens turn away from the Lord in spite of their good efforts to raise them in the nurture of the Lord.
What’s a parent to do? As someone who empathizes with your heartache, I suggest that you soak in His word. You’ll find that the Lord will supply you with cool water for your journey.