I'm at my wit's end.

Meaning

I'm extremely frustrated and at a loss for what to do.

Examples

• John: 'This computer keeps crashing.'
• Alice: 'Oh dear! I'm <b>at my wit's end</b> when my computer acts up like that.'
• John: 'I know how frustrating it is to be <b>at your wit's end</b>.'
• Alice: 'I can't solve this problem.'