Translation of "신경이" in English

‎이럴 때는 신경이 곤두서죠

You're on hyperalert.

물론 여전히 외모에 신경이 쓰이지만

I still cared about how I looked, of course,

‎포기하는 심정으로 ‎해변으로 올라왔죠 ‎뭔가 신경이 쓰여서 ‎왼쪽으로 살짝 틀었는데

I'd kind of given up and was going back to the shore. Something just made me veer slightly to the left.