The Angel of Pain by E.F. Benson — Read

A wave -- such waves are tidal-periodic, and after they have passed leave the sea quite calm again -- a wave of interest in the simplification of life swept over London towards the end of this season. A Duchess gave up meat and took to deep-breathing instead; somebody else had lunch on lentils only and drank hot water, and said she felt better already; some half-dozen took a walk in the Park in the very early morning without hats, and met half-a-dozen more who wore sandals; and they all agreed that it made the whole difference, and so the movement was started. Simplification of life: that was the real thing to be aimed at; it made you happy, and also made any search for pleasure unnecessary, for you only sought for pleasure -- so ran the gospel, which was very swiftly and simply formulated -- because you were looking for happiness, and mistakenly grasped at pleasure. But with the simplification of life, happiness came quite of its own accord.

You breathed deeply, you ate lentils, you wore no hat (especially if there was nobody about), and under the same condition you wore sandals and walked in the wet grass, to reward you for which happiness came to you, and you ceased to worry. Indeed, in a few days, for London flies on the wings of a dove to any new thing, the gospel was so entrancing and so popular that hatless folk were seen in the Park at far more fashionable hours, and Gladys Ellington actually refused to go to a ball for fear of not getting her proper supply of oxygen. She, it may be remarked, was never quite among the first to take up any new thing, but was always among the foremost of the second.