Dr Robert Waldinger is the current custodian of the world's longest-running study into what makes us happy. As director of the Harvard Study of Adult Development, which has been running for 84 years, the professor of psychiatry at Harvard medical school and a practising psychiatrist has coined a snappy way

It's difficult to do any absent-minded mini-scrolling these days and not be served up a link on (someone selling themselves for) the practice of mindfulness. One such headline I saw promoted a book called Meditation Illuminated. Certainly outside my usual zone of interest. Yet there was a little selling nugget