Everyone wants to be rich. Check out what one habit the world's richest people attribute their success to.

Inc. reported that the one thing that separates "the overwhelmingly wealthy from the rest of the world," other than money, is the love for reading. Several high-profile people have admitted that they make it a point to read and gain knowledge.

Business tycoon and renowned investor Warren Buffett has revealed that he devotes about 80 percent each day to reading. In the early days of his career in the investment industry, it was said that he had read about 600 to 1,000 pages each day.

Microsoft founder Bill Gates reportedly reads an estimated number of 50 books a year. Facebook CEO Mark Zuckerberg, on the other hand, has vowed to read and finish a book every two weeks last year.

These industry giants understand that books are the greatest tools to gain knowledge. To gain more, one must read more.

"That's how knowledge works," Buffett said. "It builds up, like compound interest. All of you can do it, but I guarantee not many of you will do it."

According to News.com.au, getting rich requires hard work. Prepare kids to become billionaires by teaching them to excel both with physical and mental work.

"Surprisingly enough, we all have the capacity to grow immensely successful by changing our reading habits bit by bit, every day," Inc. added. "The real question is not whether or not we have access to such change--but rather whether or not we will take advantage of the plethora of resources around us to put that change into effect."

Still, we need to be selective about the things that we put in our heads. It was revealed that highly-successful people often opt for educational books and publications as well as inspirational biographies.

Although novels, magazines, and other creative works may be good stress relievers, equipping one's self with self-help and guide books will definitely help you on your way up. Furthermore, reading has also been linked to preventing depression and the onset of dementia.