Meryl Streep, one of the most celebrated actors of her generation, made this remark in her 2007 Golden Globes acceptance speech after winning for her role as the famously demanding Miranda Priestly in “The Devil Wears Prada.” Her point reflects how combining confidence with careful preparation and clear communication can lead to success. Whether negotiating pay, setting boundaries, or pitching an idea, maintaining a quiet, authoritative confidence allows us to advocate for ourselves effectively and open doors that may otherwise stay closed.