what help can we give a parent who seems at rist to become an abuser?

I became interested in the topic of child abuse after deciding that i wanted to become a child psychiatrist. I want to help children who go through tough things.i only personally know one person who has been abused, and that pushed the topic interest in my head. I have actually became more interested after reading the newspaer and watching the news and seeing the way parents abuse their children. this has actually become an epidemic now in society because there are more and more children getting abused everyday.
i only know a couple of tings about child abuse. i read that every 13 mins there is a child getting abused in the U.S. that is terrible rate because no one especially a child deserves to get abused. i want to know why parents actually abuse their children. i want to iunderstand what drives a parent to do terrible things to their children. i also want to know what kind of help a parent can get if they feel they might become abusive. what does a parent get out of abusing a child?