He is be constantly dysphoric (sad) and anhedonic (finds no pleasure in anything, including his former pursuits, hobbies, and interests). He is subjected to violent mood swings (mainly rage attacks) and all his (visible and painful) efforts at self-control fail. He may compulsively and ritually resort to an alternative addiction – alcohol, drugs, reckless driving, shopaholism.
This gradual disintegration is the narcissist’s futile effort both to escape his predicament – and to sublimate his aggressive urges. His whole behaviour seems constrained, artificial, and effortful. The narcissist gradually turns more and more mechanical, detached, and “unreal”. His thoughts constantly wander or become obsessive and repetitive, his speech may falter, he appears to be far away, in a world of his narcissistic fantasies, where Narcissistic Supply is aplenty.