自じ己こ研けん鑽さん

noun

self-improvement; self-cultivation

Refers to the act of diligently improving one's own skills, knowledge, or character through personal effort.

• 彼かれは常つねに自じ己こ研けん鑽さんに励はげんでいる。

  He is always striving for self-improvement.

• 語ご学がくの自じ己こ研けん鑽さんのために毎まい日にち勉べん強きょうしている。

  I study every day for self-improvement in languages.