““The classical literature in psychology describes the relationship between anxiety and performance, including mental performance, in terms of an upside-down U. At the peak of the inverted U is the optimal relationship between anxiety and performance, with a modicum of nerves propelling outstanding achievement. But too little anxiety—the first side of the U—brings about apathy or too little motivation to try hard enough to do well, while too much anxiety—the other side of the U—sabotages any attempt to do well. A””
