Why do so many senior people struggle to delegate key tasks even when they know they are limiting growth by being the bottleneck in their business? The latest scientific evidence shows that it’s not only down to skill; it’s their brain getting in the way. There is always a lot more to be done in a day than you can achieve by yourself, and the key to success is knowing what to let go of. But letting go creates uncertainty, and your brain hates uncertainty almost more than anything else.