Well, to answer my own question, much like the movie, I would learn to play the piano, help all those who need helping (because I know what's going to happen next), acquire a few useful skills, and get to know people.
Which brings me to the idea of time. What would I do if I could manipulate time? Definitely all of the above and more. Perhaps eat all I want until I get sick and tired of all the foods in the world. Then, I would rewind to my default state. I would probably make myself a marathon runner (26 miles, anyone?) by leaving myself on a treadmill everyday and fast forwarding a few hours until after my workout. I would go cliff diving and slow down time in mid-air, to savor the rush of adrenaline, excitement, fear and all that mix of emotions. I would spend time with friends and family and slow down the good moments. I would document those good moments. I would reprogram my judgmental-ness - tuning down the judging others unnecessarily. I would live in the moment. I would master the art of timing. Because after all, timing is everything. Mostly.
I would probably work for the UN, in a new division called 'World Peace Police', where my team and I would work to restore and then maintain world peace. Specifically.
I would work hard early on and enjoy the fruits of my labor later. I would take note of stocks now and fast forward to 5-10 years later to see which stocks yielded the most gains. Then, I would go back in time and know what to invest in.
I would set up a more efficient system to place orphans with their adopted parents. I would try my best to bring kindness and love into fashion. I would make it my mission to eradicate severe depression and loneliness. Sure, to some extent for us to know the difference, but not until it reaches the depths of miserable hell for the individual. I would not push for perfection and uniformity but rather, to embrace and improve upon imperfection and individuality.
I would stress on faith. Faith in humanity, faith in a deity, faith in hope, love and charity. When I decide I have done all I can for myself and those around me, I will throw a 'Going Away' party. This party, I will invite everyone in the world to come to. The old, the young, the newborn. I would have each one sit in front of a camera and tell me of their life story. For the newborns, I would request that they do the same when they are old enough to do so. After this long, long night, I will pack my bags and say goodbye…
Because it is now time for me to journey on… back from where I came from in the very, very beginning.
All these things, sum up my Ultimate Dream. It would bring me immense joy, pleasure and satisfaction if I could do 50% of these things in my lifetime, even if to just a small extent. Call me ambitious. Call me a dreamer. Call me what you will. But in the end, I want to exit Earth feeling that my good deeds collectively have made an impact. Perhaps… my way of saying 'Hello' to the World.
So...
What will tomorrow bring?