A common belief among doctors is that doctors can do anything better than a person who isn't a doctor and that higher skilled doctors, like surgeons, generally believe that they can do anything better than lower skilled doctors, like GPs. I managed an anesthesiology practice for a couple of very long years. The only female doc second guessed nearly everything that I did. Six months after I left and her husband replaced me, she demanded that I had to come back and fix the problems that her husband inherited. I offered to do so for $300 per hour, with a guarantee of 1,000 hours per year, but I never heard back from her, although a couple of her partners told me that they wished that they hadn't hired her husband to manage their practice. Apparently, he didn't understand how to read and comprehend contracts and he had very poor EXCEL skills, so he didn't produce the detailed monthly, quarterly, and year to date reports that I had automated.
