In early 1980s when I was a student majoring in psychology, I was wondering how I could motivate myself. With this as a start, I got interested in what motivates men. In those days in psychological research, motivation was equated with achievement motivation.
But I could hardly agree that men are driven by achievement motivation.

I talked over my question with Professor Jun’ichi Kobayashi, then my former professor in counseling technique.
He gave me tips that I might be addressing the “will to meaning” that Victor Frankl discussed to explain “motivation.” Then he introduced me Frankl’s book, “Will to Meaning” -- Japanese translation was published by Brain Publication but is now out of print.
This resulted in my encounter with the Purpose in Life Test (PIL Test), also know as psychological test on worthwhileness of everyday life in Japan.

Later I joined a team to develop PIL test in Japanese language, based on logotherapy
So I wanted to study logotherapy systematically and specifically such as how logotherapists should approach their clients.
I fortunately had a chance to learn logotherapy from Mrs. Kayao Katsuta, the first Japanese logotherapist, for a decade, while I had increased chances to use logotherapy in counseling.
I will make use of accumulated knowledge on logotherapy in my counseling.
I wish more counselors use logotherapy and PIL test.

The figure below shows anti-stress effect of PIL score from the results of a survey conducted in large business establishments with about 2000 employees.
Those high PIL score group members, who consider their own life is worthwhile, showed stress responses much less frequently than low PIL score group members even when they experienced stressful events more frequently (from one to four).
This is my ground for laying weight on worthwhileness of everyday life to improve mental health in workplace.