Taking my new stand-up show Girl on Girl to the Edinburgh festival this year and playing at the prestigious venue the Gilded Balloon, was hand on heart the most stressful thing I have ever done — and I lived through the Ed Stone. My nerves were off the scale. Will anyone come to see the show? Will it be a massive disaster? Is this a very public and expensive cry for help? Why don’t I just go on a yoga retreat? These are all the things which swirl round your head seconds before you go on stage.