09/10/2012 10:42 am ET | Updated Nov 10, 2012

What Did Johnny Cash Write in His To-Do List?

I love lists in every form, whether by me or by other people. I was crushed to realize that I'd missed the Morgan Library's recent exhibition, Lists: To-dos, illustrated inventories, collected thought and other artists' enumerations. I really wanted to see that.

I was enchanted to see Phil Patton's piece in the New York Times on "Our Longing for Lists." The piece was illustrated with the image of Johnny Cash's to-do list (which, by the way, reportedly sold at auction in December 2010 for $6,250).

Here's the list. On a sheet printed with the words, "Things To Do Today!" Johnny Cash wrote:

Not smoke
Kiss June
Not kiss anyone else
Not eat too much
Go see Mama
Practice piano

In the section marked NOTES at the bottom, he wrote:

Not write notes

I was gratified to see that Johnny Cash follows one of my Secrets of Adulthood: Every to-do list should include a few items that can be accomplished in the next five minutes. Important for morale. And even Johnny Cash had to practice piano.

It was interesting to see that "worry" was on the list. Most people try not to worry; I'd be very curious to learn why Johnny Cash wanted to worry, and what he intended to worry about. Or maybe he was thinking "Not eat too much" and "Not worry" and just wrote it down that way.

How about you? Do you find to-do lists helpful? Do you keep them on paper or on a device? I still use paper.

For more by Gretchen Rubin, click here.

For more on happiness, click here.