끊어야하는데

In a sentence

• 흡연을 끊어야하는데 아직 용기가 나지 않아요.

  I need to quit smoking, but I still lack the courage.

  Here, '끊어야하는데' is used to indicate the speaker's need to quit smoking, expressing obligation.

• 친구한테 전화를 끊어야하는데 너무 아쉬웠어요.

  I needed to hang up the phone with my friend, but I felt very reluctant.

  In this sentence, '끊어야하는데' implies that the speaker had an obligation or necessity to end the phone call but felt regret about it.

• 이젠 모든 걸 끊어야하는데, 너무 힘들어요.

  I have to quit everything now, but it's very difficult.

  Here, '끊어야하는데' connotes the necessity to stop or break away from all engagements, with the juxtaposition of difficulty in doing so.