It isn't a job for everyone and it takes time to build up the name. And only a few % of them are able to get rich.
One of my ski buddy's wife is kind of a top Chinese agent, one of those familiar names appear on each real estate paper. She has 6 assistants under her to take care of her "business" while she could still enjoy lots of her weekend's life.
One that could build up a name like her, customer come by themselves and request you to handle their buy/sell. In another word, people come to give you money, how nice. Of course, it is the case when the market is hot.