This is a method that has been used for sustance abuse intervention by non-specialists. It is suggested as a method for healthcare practitioners of all types to use for opportunistic interventions when they encounter a situation in which a person's ideal behavior is discrepant from their actual behavior (I can't think of any examples, can you?). One study suggested that brief interventions work better than no intervention at all, and sometimes as well as more intensive treatment. It appears to be adaptable to many risk behaviors and populations.
It reminds me very much of nonviolent communication, as expounded in the book of that title by Marshall Rosenberg.
The technique is client-centered and is designed to build trust and reduce resistance, and to increase readiness for change. The principles include:
1) understanding the client's view accurately
2) avoiding or de-escalating resistance
3) increasing the client's self-efficacy
4) increasing their perceived discrepancy between their actual and idea behavior
The active components of the technique are:
1) increasing readiness to change
2) using empathic listening techniques
3) increasing self-efficacy
4) increasing percieved discrepancy