When I did my improvisation course recently the teacher, Chris, said something like this: When I have a group of kids and I ask them who wants to go first they all put their hands in the air and fight to get to the front, because they aren’t worried about success or failure on that attempt, they are just interested in having as many goes as possible. When I have a group of adults and I ask them who wants to go first they look at their shoes and try and hide behind each other, because they are worried about the quality of each individual go, about whether they can do it right, successfully. This is why children learn so quickly, he said, because they aren’t worried about getting it wrong. So, he said, when he asked for volunteers he wanted us not to worry about failure, instead to to expect it, and to remember that the most fun is to be had by trying to have as many goes as possible