Japanese article: 生きがい考（３） : なぜ生きがいだったのか生きがい考　ー　神田信彦

Details about article and PDF form (only in Japanese) are below site:

https://bunkyo.repo.nii.ac.jp/index.php?active_action=repository_view_main_item_detail&page_id=29&block_id=40&item_id=3002&item_no=1

This article examines historical circumstance of “Ikigai theory boom” in around 70’s in Japan.  This article shows everyone has ikigai consciously/unconsciously all time.