The first step of the Fifth Dimensional layer was to clear your mind of distracting thoughts. After this was the visualization.
Back on Earth, even in the 25th Century, there were entire sciences based around state of mind and its importance. In order to understand, one only need to look toward stories of mothers lifting cars up and off of their children. In those moments, it wasn't about whether or not they could accomplish it, but rather they had to no matter what… Or else they would lose something precious.
Visualization was a way of artificially allowing a person to reach such a state. There were athletes and pro lifters who could place themselves in the most horrid of situations mentally all the for the sake of gaining that extra boost in strength.
Simply put… The mind was a powerful thing.