self-possessed (adjective)

1. In Greek mythology, Athena is often portrayed as a self-possessed goddess, confident in her abilities and wisdom.

2. The protagonist in the anime series is portrayed as a self-possessed character who remains calm and composed during challenging situations.

3. The runway model demonstrated a self-possessed walk, exuding confidence and grace.

4. Despite facing obstacles, the self-possessed heroine of the romantic novel remained poised and level-headed throughout her journey of love.