There are billions of Parallel Universes with billions of copies of you living different lives because of different choices made and different choices made by others in the other parallel universes.
To put it simply imagine a powerful radio that you can tune into lots of different stations. While you are tuned into Radio one for example there are thousands of other radio stations still broadcasting but you are not aware of them because you are not tuned into the right frequency.
Everything that exists in the Universe you live in now have atoms that all vibrate at the same frequency but if you were able to alter the frequency you would find yourself on a parallel earth on a parallel universe.
Although there are billions of outcomes for the future of planet earth there are only two major outcomes one is Mankind will learn to live in peace and harmony the other is total destruction the choice is yours.