Could it be like jazz? Viv Groskop talks to writer, poet and performer Yrsa Daley-Ward about allowing a bit of improvisation into your performance, so that you can respond to the energy in the room. They talk shyness, nerves - and bringing the realest, clearest, most honest version of yourself. Don't look for perfection, she says. There's always another chance to create something new.   You can find out more about Yrsa and her work, including her latest book The How: Notes on the Great Work of Meeting Yourself, here. Viv's book, Lift As You Climb is out now. @vivgroskop