Make it small
“Go big or go home” is a fine and courageous thing to do, but in all likely hood you’ll be going home. To make it big you have to chase a one in a billion, and chasing one in a billion is chasing 100% luck. Dreaming to be the greatest singer in the world is different to the dream of being the greatest country singer in the world. One encompasses everything, the other has a target, a community and group that can accept you and make you their leader.
Start small, find a niche, gain trust and share your passion.