Juno, played very smartly by Ellen Page, comes off as thoroughly self-possessed and not quite as worldly as she thinks.

NPR: This Season, the Scrappy Heroes Are Wearing Skirts

Proud's character is said to be self-possessed and a little snobbish, with a low opinion of his mother's boyfriend, Minty.

BBC: Disabled character for EastEnders

In 1818, a half-educated but boldly self-possessed beauty named Fanny Brawne (Abbie Cornish) captures the admiration, and then the love, of a tubercular young man (Ben Whishaw).

NEWYORKER: Bright Star

These Dan-ites can be assured that the handsome, self-possessed 22-year-old actor delivers nicely, conveying a lot in a performance that requires an excessive amount of silent tiptoeing.

CNN: Review: 'The Woman in Black'

For such a self-possessed woman, she became unduly anxious.

BBC: John Cole: Me and Mrs Thatcher

Isabella Swan (Kristen Stewart), a lovely, slender, self-possessed high-school junior, moves to a new school in rainy Washington State and sees a tall, inordinately pale boy, Edward Cullen (the square-jawed Robert Pattinson), glowering at her in despair.

NEWYORKER: Twilight

As played by the fabulously watchable Ellen Page, Juno McGuff is a sharp-tongued, self-possessed 16-year-old who's not about to let an unexpected pregnancy get in the way of her life or her quirky sense of humor.

NPR: 'Juno'

She is self-possessed, intense and forthcoming.

WSJ: Anjelica Huston

More likely, they possessed a self-interested instinct to help get a co-worker back to work.

WSJ: Matt Ridley on what a Rat Rescue Says About People | Mind & Matter