diff --git a/content/notes/how-to-spend-time/index.md b/content/notes/how-to-spend-time/index.md
index e0a1146..c8edbaa 100644
--- a/content/notes/how-to-spend-time/index.md
+++ b/content/notes/how-to-spend-time/index.md
@@ -70,6 +70,7 @@ Leisure:
 * I spend a lot of time mindlessly scrolling my phone
 * What do I love to do that is relaxing & that I don't feel a constant need to improve at?
 * [Spend Exactly None Of Your Time Killing Time][8]
+* _Rapt_, p. 108
 
 [8]: https://deadspin.com/spend-exactly-none-of-your-time-killing-time-1831777904