她担心很多，但拒绝为琐事担忧。

She worries a lot, but she refuses to ___lose ___sleep ___over trivial matters.

考试期间，我太专注于学习，无暇为小问题担忧。

During the exam period, I was too focused to ___lose ___sleep ___over minor issues.

作为领导者，你不能为每一条批评而担忧；相反，要关注大局。

As a leader, you must not ___lose ___sleep ___over every criticism; instead, focus on the bigger picture.