Perhaps the word "eminent" was inappropriate: I meant, more generally, people with the ability to produce extremely valuable intellectual work and who have to some degree already produced that kind of work. This description could apply to people who haven't attained eminence in the traditional sense, but have still demonstrated the required brilliance. Eliezer is, again, a good example: he says, I believe, that he does serious work for only a couple of hours per day (I'm not entirely sure about this, and I'm happy to be corrected), and is as such someone who could benefit from a productivity or time-management coach. Another example that comes to mind is Saul Kripke, who is widely regarded as one of the smartest philosophers alive and the author of one of the most influential philosophical works of the past century (Naming and Necessity), and yet has produced very little output in large part because of lack of discipline.