Years ago at a convention I attended, Analog editor Stan Schmidt mentioned some story ideas he regretted never writing up. He said he always thought "The Man Who Sold His Soul For His Country" would be a great title to use for a story.
It took me 12 years, but I finally had an idea for a story that would fit that title. I finished it today. It's my first short story of 2016, the 138th I've written since 2002.