Each person's path to success may be unique, but there are many commonalities among the world's most successful people.
For his book, "The 8 Traits Successful People Have in Common," author Richard St. John conducted interviews with more than 500 highly successful people, from the likes of Bill Gates and Richard Branson to Martha Stewart and Ben Cohen, the cofounder of Ben and Jerry's ice cream.
St. John entered transcriptions of every interview into a database in order to analyze more than 300 possible success factors.
He found they all shared eight traits, which he calls the "8 to be great" because "they're the foundation for success and greatness in any field."
Scroll down to see the traits.
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1. Successful people are passionate about what they do
Passion tops the list because "if you love what you're doing, it will be so much easier to develop the other seven success traits," St. John writes.
He says there are two types of people: strivers and seekers. Strivers know what they want to do early and can go for it from a young age, like Tiger Woods. The majority of people, however, are seekers. They have to discover what they love.
St. John says there's one easy question you can ask yourself to determine if you've found your passion: "Would you do it for free?" If the answer is yes, then you've likely found it.
"Do what successful people do and follow your heart, not your wallet," St. John writes. "In the end, your wallet will be happy you did."
2. Successful people work hard while having fun
Hard work is necessary in any field, but it's important to have fun while you work.
St. John writes that he once read an article saying there was no correlation between success and hours worked, but he disagrees. Every successful person he interviewed works long hours.
Some of the people he interviewed take an unconventional approach to the workday. Rather than the standard 9 a.m. to 5 p.m. shift, they look at each workday as a 5 a.m. to 9 p.m. shift. Oprah Winfrey, for example, told St. John that she "would never see daylight."
But it's important to avoid burnout. He writes that successful people aren't workaholics; they're "workafrolics" because they have fun doing what they're doing.
Having an 80/20 split is a good guideline, he says, meaning 80% of your work should be enjoyable and the remaining 20% should consist of the serious, not-so-fun stuff.
3. Successful people have a specific focus
Focus is key. To be successful, it's important to specialize in a certain area and build your expertise.
"Success means narrowing down and focusing on one thing, not being scattered all over the map," St. John writes.
But there's more to it than just picking a field and focusing on it. You should start out thinking wide and then narrow it down into one specific focus.
"We have a million things on our minds every day," St. John writes. "But we can't succeed at a million things. It's hard enough to succeed at just one thing."
St. John uses Warren Buffett as an example, who told him that putting money in a lot of things is "a Noah's Ark way of investing — you end up with a zoo that way."
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