I still find myself using some of the phrases including the title one. Having a kind of mini script helps to diffuse things in one's head and gives you more calmness even if you don't feel it inside. I do remember repeating such a phrase one time with a child persistently waving a branch he'd broken off from a large pot plant ! I was studiously ignoring him having a conversation with another group of children at the time!
I like the great advice about primary and secondary behaviour: how quickly a situation can escalate far away from the reason you are talking to somebody in the first place. You start off by talking about that and relating everything to it but in a jiffy you've veered away, drawn away from the original point, talking about a completely different (secondary) behaviour. Bill Rogers is very realistic about trigger points and the fact that we're all human - children and teachers. I like that. I really think it's worth having a look if you haven't already-it's for use in your classroom STRAIGHT AWAY and doesn't require a thousand charts, stickers and complicated stuff you know you can't keep up for the term.