The next time you’re consumed by anxiety – which, given the headlines, is probably this minute – you might borrow a tip from the philosopher Massimo Pigliucci, author of the excellent new book How To Be A Stoic. In a recent podcast, Pigliucci described how he used Google Street View and Google Earth to create a slideshow that starts with an image of his own home, then zooms out, out and out, until it shows the whole planet. He consults it when feeling overwrought. You couldn’t hope for a more vivid illustration of the Stoic “dichotomy of control”, which urges us to restrict our attempts to change things to those actually in our power, instead of making ourselves miserable railing against those that aren’t. (See also the “serenity prayer”, popularised by Alcoholics Anonymous.) You are – not to be rude – a tiny part of the cosmos. That doesn’t make you powerless. But it does mean you’re almost certainly stressing about things that will, without doubt, remain majestically unaffected by your stress.