Be a bag/bundle of nerves

Pro Tip 1/3

Intensity

The phrase suggests extreme nervousness, more than just being slightly worried or anxious.

On my wedding day, I was such a bundle of nerves, I could barely say 'I do.'

Pro Tip 2/3

Temporary State

This phrase usually refers to a temporary condition, often before an important event.

The students were a bag of nerves just before the results were announced.

Pro Tip 3/3

Colloquial Usage

It's commonly used in informal contexts, such as conversations between friends.

I'm a bundle of nerves every time I have to drive in heavy traffic.