Rachel Kelly, a respected former journalist on the Times, might seem the most blessed of women: five children, marriage to the banker Sebastian Grigg and a large house in Notting Hill. However, soon after her second child was born she suffered a breakdown of a most acute kind.

Terrified, and in such distress that all she could keep saying over and over was ‘I’m going to crash,’ her account of her illness is harrowing to read.