In other words, “Only by focusing on contribution in one’s work and in one’s relationships with others can one have good human relations. This is how human relations become productive. The only definition of a good relationship is that it is truly productive.”--- “Professional Requirements” (Drucker.)
This page is auto-translated from /nishio/生産的であることが良い人間関係の定義 using DeepL. If you looks something interesting but the auto-translated English is not good enough to understand it, feel free to let me know at @nishio_en. I’m very happy to spread my thought to non-Japanese readers.