How to deal with children who don't care?

Children don’t care about their parents when they grow up. Where do we fail as parents and what is your advice to parents so that this situation could be controlled?
Sri Sri Ravi Shankar:

That is why I say that it is important to instill the three types of trust in your children – trust in oneself, trust in the goodness of others, and trust in the Divine. A little bit of moral and spiritual values, and the way you treat your parents and ask them to treat their grandparents can make an impact on them. From a young age, tell your children to take care of their grandparents. They will start being sensitive this way.