Mark Cuban shared rent with 5 roommates at 24, survived on canned food before becoming a billionaire; here's how he managed his expenses - The Economic Times
Cuban recalled that his credit cards were taken away during that period and his food expenses were extremely limited. He even survived on canned food, instant ramen and peanuts. He said that he learned about business by observing his bosses and their superiors, using his early jobs to understand how businesses operated.