Be yourself; no base imitator of another, but your best self. There is something which you can do better than another. Listen to the inward voice and bravely obey that. Do the things at which you are great, not what you were never made for.
Most people don't grow up. Most people age. They find parking spaces, honor their credit cards, get married, have children, and call that maturity. What that is, is aging.
The leaders we revere and the businesses that last are generally not the result of a narrow pursuit of popularity or personal advancement, but of devotion to some bigger purpose. That's the hallmark of real success. The other trapping of success might be the by product of this larger mission, but it can't be the central thing.
To succeed, you must have tremendous perserverance... tremendous will. "I will drink the ocean", says the perservering soul; at my will mountains will crumble. Have that sort of energy, that sort of will; work hard, and you will reach the goal.