Thomas C. Corley spent five years studying millionaires and gathered his insights in multiple books, including "Change Your Habits, Change Your Life."

Corley found that people who became wealthy practice many of the same daily habits, such as reading consistently, exercising, sleeping at least seven hours a night, and carving out time to think or brainstorm.

found that people who became wealthy practice many of the same daily habits, such as reading consistently, exercising, sleeping at least seven hours a night, and carving out time to think or brainstorm. Millionaires also make important choices about who they spend their time with, what goals they pursue, and who they turn to for advice.

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All self-made millionaires had to start somewhere.

Much of their transformation from ordinary to seven-figure status can attributed to "rich habits," a term coined by Thomas C. Corley, who spent five years researching the daily habits of 177 self-made millionaires.

"From my research, I discovered that daily habits dictate how successful or unsuccessful you will be in life," he wrote in his book "Change Your Habits, Change Your Life."

"There is a cause and effect associated with habits. Habits are the cause of wealth, poverty, happiness, sadness, stress, good relationships, bad relationships, good health, or bad health."

The good news is that all habits can be changed, Corley said. Here are a few "rich habits" of self-made millionaires that you can start developing today.