self-poised

Are we self-poised, or does our balance depend on something external?

But William was self-poised, and bore himself with a sort of brave humility that should have disarmed even rage itself.

Through it all he was the self-poised American, never losing his native sense of humour.

Walter Scott was big, broad, easy and self-poised, like one of his own historical novels.

He was always cool and self-poised, and his clear, resonant voice had a peculiar, agreeable quality.