You need more than intelligence and money to be highly successful. In fact, these two components make up just a small fraction of success, according to entrepreneur Jim Cantrell, who was part of billionaire Elon Musk's SpaceX founding team. In a Quora post that was first published on Forbes, Cantrell writes, "Intelligence is more of a tool that enables you to be successful rather than an ingredient itself." Today, SpaceX is set to launch a rocket that, if successful, will carry Musk's cherry red Tesla Roadster to space.

"If we are successful in this, it is game over for all the other heavy lift rockets," Musk said Monday evening on a press call, reports Business Insider. Through Cantrell's years of experience advising billionaires and tech companies, and his extensive work with Musk, he has seen what works and what doesn't work on the road to success. Success, Cantrell writes, relies on a "single simple formula" that is based on three things, which Bill Gates, Mark Cuban and Jeff Bezos seem to agree on as well:

1. Passion

Cantrell says to do what you're most passionate about in life. "Without passion, your work is not your love and you can never be your best or be better than others who are running with their passion," he writes. Other highly successful people have said the same. In a Q&A with ABC.net, Microsoft co-founder Bill Gates says: "If you're lucky when you're very young, you find something you're passionate about. I did when I was 13 years old. I found computers and software." This passion led him to create Microsoft, which is now valued at $507.5 billion and has made him the second richest person in the world with a net worth of $90.2 billion, according to Forbes.

2. Talent

"Do something that you are inherently good at or talented at," writes Cantrell. If you spend your life doing something difficult, which you're not particularly good at, it will put you at a disadvantage to more talented people within that same field, he explains. Billionaire entrepreneur Mark Cuban has said something similar. In fact, he says, talent and effort are often what lead to passion. For Cuban, technology was his talent. When he received his first job out of college, he started to use technology and realized he had a real knack for it, he wrote on his blog in 2012.

He taught himself how to use the software program at his company and would go up to eight hours without taking a break because he was so invested in his work. "That's when I realized that I can be really, really good at technology," notes the "Shark Tank" star. He eventually launched the computer consulting service, MicroSolutions, which he sold to CompuServe in 1990 for $6 million. "When you are good at something, passionate and work even harder to excel and be the best at it, good things happen," writes Cuban, who now has a net worth of $3.3 billion, according to Forbes.

3. Value