Viliam, good point about the general principle of a million bucks, although it would probably be more in the modern world.
However - and this is something I chose not to go into in the article due to word constrictions - people who go into medicine don't have that mentality. They generally have a mentality of working as a doctor throughout their life until they retire. It's really hard to choose a Schelling point to stop working in that sort of profession - doctor, lawyer, etc. It's much easier for entrepreneurs who have a natural out when their business gets bought out. Doctors etc. often association their source of meaning and purpose with their professional activities.
Here's my article in Lifehack, one of the most prominent self-improvement websites, bringing rationality-style ideas to a broad audience, specifically long-term orientation, mere-exposure effect, consider-the-alternative, and agency :-)
P.S. Based on feedback from the LessWrong community, I made sure to avoid mentioning LessWrong or rationality in the article.