Perhaps his was a confidence born of desperation.

He has a confidence born of doing what comes naturally.

He moved through the trees and underbrush with a confidence born of his savage DNA.

The rest of us looked confident, but it was a confidence born of having been there and done that and survived.

Leyel started reading with a confidence born of experience; had he ever really desired anything and been denied?

Valentine couldn't tell if this was just rear-area bravado, propaganda, or confidence born of experience.

It was confidence born of experience.

With a confidence born of self-assurance and ignorance, Varis quickly activated the thrusters.

With the confidence born of long experience and knowledge of his weapon, he took a careful though quick aim and fired.

Instead, her almond eyes glittered with a new and serene confidence, born of knowing that men would now die for her.