I had a few sessions on it decades back as part of a conflict resolution course.

I don't think I've ever applied it as described in the article or those sessions, but there were a few things from then that I've found to improve how I engage with people (when I remember).

- ask questions regularly

- make sure your questions are open-ended and can't be answered with a yes/no

- avoid saying stuff like "you are like this" or "this is like that". It's safer to say things, particularly difficult things, from one's own perspective, e.g. "I think that".