Kishimi was a part-time lecturer in psychology at Kyoto St. Catherine High School, Department of Nursing.
The book "The Courage to Be Disliked," co-authored with Fumitake Koga and published in 2013, became a bestseller, selling over one million copies.
"[citation needed] Since June 2017, Kishimi has been writing a series titled "An Introduction to Philosophy from Age 25" for Kodansha's web media "Courrier Japon."
In May 2019, he was responsible for the editorial supervision of a special feature titled "Changing Your Life with Adlerian Psychology: Ichiro Kishimi's World Advice Column."
From 2009, while caring for his father over a period of four years, he continued reading, writing books, and giving weekly lectures.