they first have to learn how to love the people closest to them, beginning with their own children.
I read a bunch of parenting books, I think this one gives very clear direction, it explains how to have any type of conversation in a healthy way, how a healthy relationship works, and the psychology research, I even paid for it to be translated to Hebrew (jewish author): https://www.amazon.com/Peaceful-Parent…/dp/0399160280… “how to stop yelling/neglect and start connecting”