Interstitial journaling, a term and suggestion from Tony Stubblebine , is about writing down what you did after a task, how it felt or went, plus what you intend to do next.
Interstitial journaling predates and may have induced Ryder Carroll's suggestion of using "=" for emotion in Bullet Journaling.
See: https://hypothes.is/a/l12OgFD7Ee-LjAevth_Piw in the piece Carroll mentions interstitial journaling.