Finished… Contagious by Jonah Berger was something I picked up at the airport. (Yes, I’ve said it before, airport bookstores always point me to the right material.) This book was especially helpful in providing insight on how to craft messages better and more effectively. Because, in this day and age, we can say a lot of things, but not everything is remembered.
THE NEXT 
I am also like this! For some reason, I keep on finding good reads at airports.
Here are some instances: 2 years ago, I got hooked to Haruki Murakami through Norwegian Wood when I bought it at Kansai Airport, and then found Deepak Chopra’s Timeless Mind, Ageless Body at an airport in India 2 weeks ago.