Here's Dr. Karen Overall talking about Behaviour Modification where she mentions her Relaxation Protocol.
Here's Roxanne Hawn's blog, Champion of My Heart, with a link to the written work and created mp3's of Dr. Karen Overall's Relaxation Protocol. She does a wonderful job of sharing her experience with it.
Although it's really beneficial for reactive dogs, I love recommending it for young impatient dogs or worrywarts who just need a bit of help making sense of the busy world or when "life" happens.
*my only note is that I do not use a NRM or a correction like "no". I'll either redirect letting them know what I'd prefer they do instead or just wait until they reset themselves.