Brave doesn't mean not feeling scared, or not feeling affected or torn apart by naysayers. Being brave means - not that you have no fear, but that you have it in you to rise above that fear to keep doing what you do. It is this vulnerability that builds true strength.
Every single person who's ever dared to do something with their life, who has ever dared to experiment with turning ideas into reality, who has ever dared make a difference... are people who, to a huge extent, brave enough to put themselves out there.