How do people break a narcissist man's ego?

Instead of trying to do something on his own, he preys on women, not just for money and sustenance, but to crush them.

Top 10 Reasons Narcissists Accuse You of Cheating

The Sneaky Mind Games Narcissists Play

Trump Raked in $57.3 Million From Crypto Venture, Per White House Financial Disclosures - Rolling Stone

He moves from woman to woman, unable to be a man and stand on his own. He prefers to take advantage of women, while abusing them and driving them to mental breakdown.

Stay away from them.

You Might Be Interested In Reading This On Quora:

Summer here, the one who debunks atheism. Isn’t it funny how atheists always say they prefer a “no-nonsense, evidence-based approach” to understanding the world, but when I bring up logical arguments for theism, they suddenly clam up?

How do I know this? My ex was a malignant narcissist who tried to destroy me. He was jealous of his ex who was a psychologist, and he was jealous of me because I was educated and successful.

A narcissistic or psychopathic man is a loser who has to compete with women.

The Fascination with Narcissists: Why We’re Drawn to Them

GM plans $4 billion push to move production from Mexico to U.S. - The Detroit News

It is best to leave him alone, and let him face his struggles on his own.

He does this by stealing from them, using them, and abusing them. He does this by trying to be better than you, but most of the time he can’t because he is completely useless. He is often very jealous of successful women.

Instead of going out into the world, competing with other men, and improving himself, that's how he lives, just like a parasite.

Why do I want to suck cock, after smoking methamphetamine?

They are so weak and failed as men, that they will put on a whole show pretending to love a woman they actually hate and want to destroy.

It is best not to get involved in a narcissistic man’s failure.

These weak men believe that women have more "privileges" than they do.

Donald Trump says he will only pick Fed chair who cuts interest rates - Financial Times

How Narcissists Make You Feel Unimportant and Unwanted

Trying to change him or even “break” him is impossible.

10 red flags to watch for on a first date to identify a narcissist

Speech by Governor Kugler on the economic outlook and monetary policy - Federal Reserve Board (.gov)