If somebody says "I'm feeling good" in an ordinary situation, say with family member, friend, etc., how can you covertly amplify/anchor that feeling with a particular look/expression or word(s) so that you can obviously reuse it to fire it when they are feeling down.

Touching them may largely be inappropriate as well as other tactics may appear too obvious e.g. asking them to "double that feeling" (Bandler seminar demonstration) or getting them to go inside,etc..

I am looking for a specific look/expression/words that you feel can easily be reproduced to fire off the anchor accurately and is unlikely to be diluted during the course of the conversation and subsequently

Anyone found or can think of an effective technique?

To me this kind of everyday practical application is far more useful to create therapeutic change than wait for people to turn up for therapy (please no debate on this comment). Any recommendation/instruction would be deeply appreciated especially ones which you have tried out already.
Hasu