I came from the world and was caught up in it for well over half my life, I am very familiar with all of the tricks of the world. The only one parents that were totally successful and what I would model my actions from, had 11 children and all grown up and with children of their own, in other words they are grandparents. I who am VERY experienced in the tricks of the world, thank God that he put that family in front of me all of these years, so I had a living example to remind me that I was correct in my actions.
There are many reasons why people fail with the passing on the faith to the children:
#1 - Overall, they do not have set goals as to what they want their children to be, nor do they think of how to accomplish it, nor do they look for examples to emulate and consult.
They entrust it to a school, priest, catechism teachers
They do not live the faith themselves, it is just the "beautiful Latin Mass" on Sundays
They do not pay much attention to the children
They let their girls ALONE to play with boys, flirt with boys, talk to boys, be alone with boys on "dates". Boys, boys, boys becomes their daughters total occupation.
They let the children watch TV, movies, news, internet, all unsupervised
Others can fill in...…………………...
What I do have are MANY real world examples of what parents should NOT do, gathered from the parents I have known all of these years, some made a few mistakes, others swallowed camels!!