Phrases Describing Experiences and Events

It was a defining moment.

C2

Meaning

An event that significantly shapes a person's character or future.

Example sentences

John: That experience changed my life completely.

Alice: I can imagine. It was a defining moment, wasn't it?

John: Absolutely. It shaped who I am today.

Alice: Yes, I understand. Looking back, I see that it was a defining moment for you.