For those of you having a hard time visualizing something that isn't "real", try this first.
1)Visualize (yes in your mind) a chalk board
2)Visualize picking up a peice of chalk
3)Visualize using that chalk to write various things on the chalk board
Where you able to do that? Then you can visualize, congrats! Still can't do the energy balls? Then yes the problem is this "real" factor. Spend a
week in deep contemplation as to what reality is, then try again.