Do what you love, and don't stop until you get what you love.
Work as hard as you can, imagine immensities, don't compromise, and don't waste time.
Start now. Not 20 years from now, not two weeks from now. Now.
So often many of us share the same challenge - we set our goals too low, making them too achievable. I remember a line from years back that went, "If you shoot for the stars you'll at least get to the top of the trees, but shoot for the top of the trees and you won't get off the ground!"
C. S. Lewis