고민에

In a sentence

• 그는 진로에 대해 깊은 고민에 빠졌다.

  He fell deeply into worries about his career path.

  In this sentence, '고민에' is used to indicate the subject's immersion in considerations or worries regarding a particular issue, his career path.

• 친구들은 나의 고민에 대해 도움을 주고 싶어 했다.

  My friends wanted to help me with my concerns.

  Here, '고민에' is a reference to the specific concerns or troubles I was discussing, with others offering assistance.

• 우리는 그룹 프로젝트의 어려움에 대해 많은 고민에 빠져 있었다.

  We were deeply contemplating the challenges of the group project.

  In this sentence, '고민에' emphasizes the act of deep consideration and mental grappling over the project's challenges.