In 1977, Ed Stewart was a happy-go-lucky teenager with his whole life ahead of him. With a new engineering job, a girlfriend and a motorbike, life was good. But when he dropped in on a friend’s party, a violent row with another teenager - who was carrying a shotgun - turned Ed’s whole life on its head. Ed had to learn to navigate the world in an entirely different way, but he made a success of it - becoming a piano tuner to the stars and counting Jools Holland and Brian Ferry as his customers. Despite a life of adversity, he tells Dr Sian Williams how not just one, but two Life Changing moments led him to be what he refers to as a “glass-three-quarters-full” kind of bloke. Producer: Tom Alban