I'm at my wit's end.

Translation language

Meaning

Feeling completely exhausted and frustrated.

John: This project is a nightmare. I've tried everything.

Alice: Oh dear, I'm at my wit's end sometimes too, with tough situations.

John: I'm so frustrated; I don't know what to do anymore.

Alice: Maybe taking a break will help. Don't feel bad; everyone feels I'm at my wit's end occasionally when faced with an impossible task.