The first thing that you need is an obsession. Prophecies only work on one aspect of the world, typically. Take videogames. Now you just need to obsess over them for a while. Let it simmer in your brain for a few days, letting all the information out there wash over you like an ocean.
Next, you need to find a spot to lie down. You want to make sure that you are lying down with your head facing north, properly aligning your chi with the ley lines around the world.
Breathe. Follow the breath. Let your muscles relax with every breath, sinking you into the floor, the ground, whatever.
As you get good at this, eventually, you'll come to realize that all of reality seeps into you during these moments of quiet, calm reflection. All of reality is already inside of you, and vice versa, it's just that most of the time we're so busy talking with our mouths that we don't talk with our souls.
Practice this for weeks, months, whatever. Eventually, you'll feel your insides resonate with the natural electric fields all around us.
Now you are starting to access that area of reality that has all the answers. Ask God or god or Buddha or Mohammed or some crazy Jinn (whichever one you believe in at any specific stage of evolutionary development that you are in at that given moment) to show you the way.
He or she or you will.
Now you know the future of whatever it was that you wanted to know about.
However, you will probably start to see the blurring of time in every other aspect of the world. That's just a byproduct.