When deprived of narcissistic supply, narcissists experience symptoms similar to the withdrawal symptoms of a drug addict; becoming delusional, agitated, helpless, and emotionally unhinged. They disintegrate and crumble, and may even experience a psychotic episode. They engage in “magical thinking;” believing that they are omniscient, omnipotent, and that they cannot fail. This makes them fearless and relentless in their pursuit of revenge.
Narcissistic Supply (Wikipedia))
Narcissistic Supply (The Narcissistic Life)
Narcissistic Supply (Daughters of Narcissistic Mothers)
Narcissists, Narcissistic Supply and Sources of Supply (Sam Vaknin)