expression
you only live once
A proverb encouraging people to seize the moment and live without regret, similar to the English YOLO but more reflective.
人生は一度きりだから、やりたいことをやろう。
You only live once, so let's do what we want to do.
彼は「人生は一度きり」と言って、会社を辞めて世界旅行に出かけた。
Saying 'you only live once,' he quit his job and set off on a world trip.
A set phrase combining 人生 (life), は (topic marker), 一度 (once), and きり (only). The exact origin is unclear, but it reflects a common sentiment in Japanese culture.