Kirsty Young asks the writer and podcaster Malcolm Gladwell what advice he would give his younger self. Gladwell's writing, in books such as The Tipping Point and Outliers, successfully distil complex ideas for a mass audience, and he has worked as a staff writer for The New Yorker. His podcasts...

Kirsty Young asks the author Irvine Welsh what advice he would give his younger self. Welsh became a literary sensation when his first novel, Trainspotting, was published in 1993. The film adaptation that followed made him a star. But before that he'd gone from being a punk in London to a turn...