Dreaming of bravery means challenging your timidity and facing your fears. Are you taking up a sword to slay a dragon in the dream as a sign of your bravery? First, you may have to admit that you are currently too timid to take up any swords to fight, accept the problem then work on a solution to challenge your timidness.
Everyone have fears, and everyone deals with them differently. Find your way by bumping your head against it. Try, try again until the fear diminishes. Break down the fear to smaller parts, and chip at it daily. That is true bravery when you want to wake up each morning and know that your fear is slowly losing its affect over you.