Conversation so far:
What was John Kenneth Galbraith's job after the war?
In February 1946, Galbraith took a leave of absence from his magazine work for a senior position in the State Department as director of the Office of Economic Security Policy.
What did John Kenneth Galbraith do after he worked at the State Department?
Galbraith resigned in September 1946 and went back to his magazine writing on economics issues.
What issues did John Kenneth Galbraith write about?
He immortalized his frustration with the ways of Foggy Bottom in a satirical novel, The Triumph (1968).

Question: What was the high point of his career?
Self-contained rewrite: What was the high point of John Kenneth Galbraith's career?