Here's something that I realized today: The body is the child. The mind is the adult. Your job as a mind is to take care of the body by observing its desperate fits of pain, anger and sadness.
The body doesn't know any better. It just screams out of helplessness. Like a newborn.
Be gentle with it. Don't try to talk it out of its fits. It won't listen. It can't.
As you are talking to it, you are the only one that understands the talking and all what you are doing is distracting yourself away from the screams of your baby. Just being near it, watching it, is enough to calm it down.
Acknowledge its suffering. Understand the why.
When it's calm - make sure to take care of whatever upset it.