Why Do Only Athletes Have Coaches?

Atul Gawande wants to expand the purview of coaches. Gawande, a surgeon, recruited a retired surgeon to coach him:

In the past year, I’ve thought nothing of asking my hospital to spend some hundred thousand dollars to upgrade the surgical equipment I use, in the vague hope of giving me finer precision and reducing complications. Avoiding just one major complication saves, on average, fourteen thousand dollars in medical costs—not to mention harm to a human being. So it seems worth it. But the three or four hours I’ve spent with [my coach] each month have almost certainly added more to my capabilities than any of this.