Jibun o michigaeruhodo kaeru gijutsu : Shigoto okane izonsho daietto ningen kankei : Chenji enishingu. (Tankobon Softcover)

The approach feels very evidence-based and practical. I'm curious whether the author started with a particular psychological theory or personal story that shaped this focus.

Some of the techniques seemed simple but powerful, making me wonder if they've been tested in real-life situations or if they were developed through research.

The book emphasizes certain triggers and environments, but I wonder what led to the selection of these specific factors over others.