Preguntas sobre ejemplos de oraciones con, y la definición y uso de "Gotoku"

A: This sounds like part of a proverb when I Googled it: 青春は短い。 宝石の如くにしてそれを惜しめ。

Judging by that, I would translate this as something like "Cherish it as if it were a jewel."

That's a little clumsy of a translation, though, so just take that as the general gist of it and try changing it up a little, I guess.