Going back to the car example, it would be very different if the car you visualized is the very car in a car shop display room that you have been coveting for some time now. You have perhaps been planning how to raise the money to buy it and everyday as you pass by that display room, your desire to buy the car becomes stronger and stronger. According to the law of attraction, your thoughts of that car plus the accompanying positive emotion that you will have it, will be the combination that will ultimately materialize for you the ownership of that car.
Motivational speaker