My partner goes for a run and comes back looking despondent. ‘I struggled all the way round,’ he says. ‘It was as if I’d never run before.’ He has run several times a week for 3 years now.

‘I know how you feel,’ I say. I’m not thinking about running, though, but meditation. I’ve been meditating for some years now, but when I sit down sometimes it feels impossible. My head itches and the items on my ‘to-do’ list compete for attention. There are odd bodily sensations that could be illnesses in the making. And if all else fails, there’s my good old tinnitus.

Outside responsibilities of …