How often have you heard the phrase, "She has a bright future" or, "He has a colorful past"? Expressions like these are more than metaphors. They are precise descriptions of the speaker's internal thinking, and these descriptions are the key to learning how to change your own experience in useful ways. For instance, right now notice how you picture a pleasant future event in your own life . • . and then brighten that picture and notice how your feelings change. When you brighten that picture, do you "look forward" to it more? Most people respond more strongly to a brighter picture; a few respond more to a dimmer picture.
Now take a pleasant memory from your past and literally make the colors stronger and more intense. . . . How does having a "colorful past" change the intensity of your response to that memory? If you don't notice a difference in your feelings when you make your memory more colorful, try seeing that memory in black and white. As the image loses its color, typically your response will be weaker.
Another common expression is, "Add a little sparkle to your life." Think of another pleasant experience, and literally sprinkle your image of it with little shining points of sparkling light, and notice how that affects your feeling response. (Television advertisers and designers of sequined clothing know about this one!)