CathInfo.com

 You can put all these things in front of a soul, but at the end of the day there's the mystery of FREE WILL.  

Yes, and also the mystery of predestination in a Catholic sense. 

That practice is the norm for seminaries & monasteries.

Indeed, I know it is the norm. But it is a good practice I think families could impliment when they have meals together. Even if it's a short repas or tea time you can get a couple of pages in. It gives one something to contemplate, or it may even be entertaining to hear a short episode of a saint's life or some persecution in history. One's mind develops a taste for the things you feed to the subconscious. Most children (even from a very young age) are consuming impure pictures, evil music, evil ideologies, etc. I've seen it first hand, and this is likely a good part of why they are lukewarm or even cold. If you feed them good things they will develop a taste for it and you may counter the progression of today's culture of death.
  On another note, it is said that even people living in the world should strive for the spiritual practice and contemplation as far as they are able. So reading a book aloud for a bit would be an easy way to partly do that. 

I, for one, have seen many, if not most second-generation traditional Catholics in my local SSPX chapel who don't understand the crisis and definitely will not pass on their Catholic Faith. There is no catechism class in the church, and nothing that teaches about the Crisis to the teenagers... they are the neglected group there.
How to keep the children Catholic??? ?

You keep them Catholic by teaching them yourself, do not rely on the SSPX. As a matter of fact, I use our SSPX prior as an example to my children of what not to do.