Hm.... Well, I would probably go with the power to hear, interact with and harness the powers of the spirits of the world, Everything from the spirit of Wind to create powerful buffets of wind that knock projectiles off course from my body, to the spirit of Corporate Leadership, to become a very rich and influential man. Then, with my new-found friends, money, and prestige I would win, I would work with the spirit of Government to create my own, which would control the earth in a harmonious Hegemony, then the spirit of Progress to remove all ghettos on the earth along with all of the other spirits necessary to create a perfect world in my own image. Then, it is off to space, guided by the spirits of Travel and Exploration, Humanity would span the stars. In my power, and because of my advisers, I would start to be treated as a god. Shrines would be made along roadways dedicated to the spirits of Travel and Safety, My own image would be on the wall of every house, and all combat between other species would always result in a victory for humanity, due to the councilling of the spirits of War, Tactics, Destruction, Sight, Death, and more.
However, all the while, I shall have to toil to keep everything together, for as soon as I take a break it will all crumble away, Causing strife, civil war, and such a large backlash throughout humanity that we would never be a unified race again, and the history texts would place the blame at my feet. Fun while it lasts, but it would be the last golden age of humanity, and I am just a man, I cant keep it up forever. Even if the stress doesn't kill me, I will die eventually, for then, I will belong to nobody but those spirits i had sought to control, and depending on how I did, I just might not get ripped to shreds for all of eternity.