Older, wiser — and happier? Plus: Will Self

'Happiness data' says youth is carefree, retirement is bliss, and you muddle through in between. We argue with the FT's Lucy Kellaway about which stage of life is the best. Then: novelist Will Self hotboxes the studio and holds forth on our obsession with smartphones and the future of London. For information regarding your data privacy, visit acast.com/privacy