It’s 5pm and Jesse Birkett is clocking off work for the day, both mentally and physically. Birkett works in Ericeira, a pretty Portuguese fishing town, where whitewashed cottages overlook the Atlantic waves, and there are still four hours of sunshine left in his day. He knows he won’t have to field any emails from his bosses once his shift finishes. So he’ll do what he does every evening after work: go to the beach to...

He had beaten more than 19,000 applicants for a place at medical school, yet Khurram Sadiq was now bunking off his hospital shifts. The 19-year-old felt inexplicably anxious around strangers on the wards and was hiding from his own patients. During lectures he couldn’t focus on what he was being taught. He deemed himself “a goof, a dunce” in contrast to his peers. Sadiq couldn’t motivate himself to revise for his exams and instead found himself panic ...