How to say "One's" in Japanese

When translating "one's" into Japanese, you must choose carefully between 一生 and 滄浪之水. In Japanese, 一生 (いっしょう (isshō)) is typically associated with "one's whole life, a lifetime" (Syllabus Level: N3) and represents Emphasizes the entirety of one's life. Often used to express determination or regret over a lifetime.. On the other hand, 滄浪之水 (そうろうのみず) maps to "One's fortune and the way one is treated by the world depends on one's own conduct." (Syllabus Level: C2PLUS) and represents Essential structural term in CEFR C2PLUS vocabulary syllabus.. A literal translation of "one's" can often sound unnatural to native Japanese speakers if mixed up!