I am a strong diciplinarian and believe if you start teaching from birth, they will at least have the 'background' to base their 'free will' on. That's obvious.
The most devout Catholic family I ever knew, had one son who declared he was an athiest, proving even the best of parents can't be sure of the outcome.
In my first post, I was dissaproving of a parent letting a child lay around, instead of helping with the chores.
Don't stop praying. Read about Solomon's son Manassah in I Chronicles, and the prodigal son.