Phrases Describing Experiences and Events

It proved to be invaluable.

C1

Meaning

The experience was extremely useful or beneficial.

Example sentences

John: Was the training course helpful?

Alice: Yes, immensely! It proved to be invaluable in my new role.

John: I'm glad to hear that! The feedback is important.

Alice: Absolutely. The new skills I gained proved to be invaluable. It helped me a lot!