“Now of course, we should choose to focus on a negative object in our meditation. If, for example, you are infatuated with someone, and if you focus your mind single-pointedly on that person, and then dwell on their desirable qualities, this will have the effect of increasing your sexual desire for that person. But this is not what mediation is for. From a Buddhist point of view, meditation has to be practiced in relation to a positive object, by which we mean an object that will enhance your ability to focus. Through that familiarity you become closer to the object and feel a sense of intimacy with it. In the classical Buddhist literature this type of meditation is described as shamatha, tranquil abiding, which is a single-pointed meditation.”
elaborate?