It is a good thing for Donald Trump that he has never had to be an employee working for a living. He is constantly shooting off his mouth and alienating people, He is lazy and takes very frequent long weekends and vacations. He lacks intellectual rigor, and is, in fact, intellectually disconnected; He cannot maintain a train of thought for more than 2 or 3 sentences. . He is disorganized and impulsive. He ignores facts and data and makes ungrounded snap decisions.
With those characteristics, Trump would have failed at any job and would have been fired from every one. He would have been living on the streets long ago. He would be seen as a total failure.