The easiest way is to write the things down that you wish, maybe into a story or a wish list that you keep up with on a regular basis. Albert Einstein believed that the best way to do it though was through your imagination like daydreaming. I have seen in reality how your thoughts create your reality through this process and at the same time there was a reason it all happened. Weird stuff!!! The trick is to stay consistent with it. Don't want a car one day and a truck the next. The message of what you wish is not clear that way.
I design equipment and systems all the time. I see them in my mind initially, then before going any further, I tear them apart in the same manner by identifying faults and /or potential problems. This helps eliminate problems later, especially in complex systems.