Grant Cardone didn't always have millions in the bank. At age 25, he was deep in debt and stuck in a sales job he hated.
The entrepreneur, who owns and operates four companies that do nearly $100 million in annual sales, reached seven-figure status by putting in more hours, he writes on Medium: "Most people work 9 to 5. I work 95 hours (per week). If you ever want to be a millionaire, you need to stop doing the 9 to 5 and start doing 95."
He's not the only self-made millionaire to say that the steady salary that comes with a 9-to-5 job is holding people back from getting rich.
Steve Siebold, who also spent 25 years studying wealthy individuals for his book "How Rich People Think," notes that there is a critical difference in how the wealthy and everyone else choose to get paid: Average people choose wages based on time — an hourly rate, for example — while the rich are typically self-employed and get paid based on results.