You were nothing to begin with; you'll be nothing when you're finished. Relax.

你出生前一无所有,当你死去后也什么都不是,放轻松

耶鲁公开课 - 古希腊历史简介课程节选

Relax. It can't be that important."

放轻松，别大惊小怪“

耶鲁公开课 - 文学理论导论课程节选

So perhaps take some comfort from that.

所以说，放轻松点，别紧张。

哈佛公开课 - 计算机科学课程节选