I don't know if I'm brave. I've done extremely brave things in the past, but in general I'm not brave enough to overcome my shyness and make it. Bravery means doing something you're afraid of (that you deem isn't actually objectively stupid) because you know it's important. It may even be / especially if it's something risky/dangerous but it's about something important enough to take the risk. I guess the bravest thing you can do is give your life for a person in danger, or a cause or whatever.