걱정은

In a sentence

• 걱정은 필요 없어요.

  You don't need to worry.

  Here, '걱정은' (concerning a worry) is used to emphasize that worrying is unnecessary.

• 걱정은 지나가고 희망이 찾아오죠.

  Worries pass, and hope arrives.

  In this sentence, '걱정은' highlights worries and contrasts them with later hope.

• 걱정은 그만하고 방향을 바꿔 보세요.

  Stop worrying and try changing your direction.

  Here, '걱정은' focuses on ceasing an action (worrying) to suggest taking an alternative action.