What changes to the perverse narcissist?

The narcissistic pervert can cure the "empty", to his lack of concern for others, stop projecting to other personality that is not his? In reality it is extremely rare that changes or want to change attitudes or values. Because the gains earned him this attitude is often very important and very rewarding for him (admiration, fame, power ...). We can not change a perverse narcissist with a "rational discourse" as the perpetual quest for power is a powerful engine and an inexhaustible source of pleasure, a real hard drug. So that it can change, it would have to undergo strong shocks and very important events that may, for example, to destabilize the high conception he has of himself, and especially to convince the long the effectiveness of its lies and tactics has waned. Only so one might expect to see, perhaps, one day (?), Develop favorably. In fact it almost never happens. But leaving hope to those around him, often blind, such a change, the perverse narcissist enhances its power. By giving his victims the impression of a sincere attempt to make amends, it deadens their distrust and makes her more easily fooled. In fact any effort to improve his personal pales even ridiculous, and he is particularly concerned to have everything to lose - his strength, power, respect that he is - with the additional risk of being duped her turn.