You get more of that which you want with each thought of your desire. Thus, the more you think about it, the more you get, and the more you attempt to find what it would be like if your desire were to manifest, the more you get to experience its manifestation.
Likewise, the more you think about your desire, the more familiar you become with it and the better you get at imagining what it would be like were your desire to manifest.
Perhaps most importantly though, the more you think about your desire's manifestation, the more you feel as if it has already manifested. As such, with each attempt you make to accomplish a specific goal, you gain access to more information that will help you accomplish that goal.