My son after stepping UNDER a ladder, seeing a black cat and a full moon night last evening had a rough hockey practice and it showed.
I was searching for words to defuse his anger and couldn't think of any and one of my training partners Chris Carr referred me to  this gold gem by the great Bruce Lee, This is gold!!!
 
"You will continue to suffer if you have an emotional reaction to everything that is said to you.
 
True power is sitting back and observing everything with logic.
 
If words control you that means everyone else can control you.
 
Breathe and allow things to pass." ~ Bruce Lee