How to delete an inaccessible note (Mac Stickies)

I found myself with a mysterious problem on my Mac: a note in the Stickies app was inaccessible. The note showed up when I right-clicked on the app icon in the Dock but was nowhere to be found on the Desktop. Thus it was impossible to delete. Quitting Stickies and restarting the Mac did nothing. Searching the Internets turned up nothing. Here is a solution:

In the Finder, go to ~/Library/Containers/com.apple.Stickies/Data/
Library/Stickies

(The tilde signifies your user name. You can get to Library by pressing the Option key after opening the Go menu from the Finder. You can get to the needed folder by going to the Library and searching the Library for stickies.)

Open the Stickies folder, examine its contents, and find the .rtfd file with the text of the inaccessible note. Copy the text to make a new note if you want, and then delete the file.

My Mac problems tend to be odd, trivial, and deeply annoying. This has been one of them.