I am courageous and confident.

Confidence gets built backwards. You do the frightening thing first, badly, and the belief arrives afterwards to explain what you did.

Someone rehearses one sentence in the stairwell before a meeting. Says it. Their voice goes thin in the middle. Nobody notices but them, and the following month the same sentence comes out level.

Courage is the part that happens while you're still afraid. Confidence is what's left over a week later. They aren't the same substance, and you only ever need the first one to begin.