Here is an excerpt from my book, The Silent Master: Awakening the Power Within:
Since pictures are connected to ideas, they have energy just as ideas do. The energy in your mental pictures is what encourages them to manifest materially. Because mental pictures have creative energy, you must be careful what you entertain in your mind’s eye. How much of your time do you spend visualizing past events that you want to eliminate? Isn’t it true we have a tendency to dwell on the issues we dislike, often visualizing and rehearsing them with great passion and intensity. This activity only keeps the undesired energy “alive,” and works against the energy of any other positive images we may strive to create.