When you make up your mind that you want to be Great, you have to learn about the Great people of the past, the Great people who changed the world, and the Great people of each respective category of absolutely everything you can think of. You have to saturate your mind in greatness. You literally have to get a degree in it. Greatness is a journey into those who have come before you.
Two categories of people can be found in the world today. There are those who make things happen and there are those who watch things happen. A spectator watch things happen while a player make things happen. In the same vein, history writers watch things happen and history makers make things happen. This is why history writers are always at the mercy of history makers.
In order to change the world, you must first change yourself. In order to have the right to see what is wrong with the world, you must first earn that right through seeing what is wrong with yourself. We do not become influencers, leaders and teachers, through pulling on our better attributes and applying those better attributes to a broken world like a healing balm; rather, we become influencers, leaders and teachers in this world, by performing within ourselves the purging that we wish to see take place in others.
Creativity is just about connecting things. A whole lot of nonsense put together, and diluted with a creative passion can eventually make sense. Keep thinking. Exploring. Keep trying out new ways and methods of doing things and just when you least expect, you may stumble on that next great world-changing idea that will make all the difference.