" the self-help industry was worth $11 billion in the US and had earned UK publishers £60 million over the last five years. Rates of antidepressant use had increased by 400 per cent in the last fifteen years and were now the third most-prescribed type of medication worldwide (after cholesterol pills and painkillers). Even those lucky few who’d never so much as sniffed an SSRI or picked up a book promising to boost their mood had probably used food, booze, caffeine or a credit card to bring on a buzz. But "

― Helen Russell , The Year of Living Danishly: My Twelve Months Unearthing the Secrets of the World's Happiest Country