Dissatisfaction can be a source of inspiration if you learn to control it.
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About Tadahiko Nagao
Tadahiko Nagao was kokoro study. Kokology is the study of kokoro 'mind or spirit', introduced in the Kokology book series by Tadahiko Nagao and Isamu Saito, a professor at Rissho and Waseda Universities in Japan and an author of a number of bestselling books regarding psychology and relationships. Read more on Wikipedia →