own the stage

If I want to like those people, when they are up on the stage, looks like they own the stage:
They don’t like at their notes.
They are relaxed and confident.
They keep people interested.
They talk to the audience with like talking to a friend.
They are not trying to be anyone else but themselves.

And everytime when I see a inspiring speech
I think, “I WISH I CAN DO THAT!"