This article was first published on Entrepreneur.com

If you’re an avid reader, listener and viewer of business content, you’re probably familiar with multimillionaire Grant Cardone. If not, he’s on a mission to change that.

As a successful car salesman, Cardone systemized how he sold cars and began selling that system, making millions. His new customized approach to selling has helped not only people in the auto industry but also Fortune 500 companies such as Google and Afflac. Because of his success, he is the author of five business and sales books, including The New York Times best seller, If You’re Not First, You’re Last. He also is a correspondent for Fox News, Fox Business, CNBC and MSNBC. If you want to get better at selling, business or even personal branding, Cardone is an authority worth pay attention to.

Listen to Cardone’s material, and you will hear loud and clear that this man is committed. He’s committed to his family, his personal brand and his success. Here are some other commitments Cardone made along the way that entrepreneurs can learn from.

1. Commitment to greatness

Think Cardone was always an overachiever? Think again. At 25, Cardone was addicted to drugs, in a job he hated and squandering his talents. At the urging of a newly sober family friend, he decided to get sober and to rebuild his life. He explained it starts with a decision, one that you may have to make over and over again. After rehab, he made another decision -- to become successful and achieve greatness, no matter what it takes. He now calls success not his goal or opportunity but his responsibility, duty and obligation. That explains his unwavering motivation.

What if you’re having trouble staying motivated?

”Show up, even if you don’t know what to do, and something will happen. Do the simple things -- call a customer, call someone you want to be a customer, call somebody who will support you.”

2. Commitment to learning

Some say Cardone is a “born salesman,” but he tells a different story. He realized he didn’t enjoy selling, because he simply wasn’t good at it. He wanted to not only improve but to dominate the industry. He needed to find his groove.

To start, Cardone read and listened to everything he could from influencers such as Zig Ziglar, Brian Tracy and Jackie Cooper. He even invested in himself by hiring his mom to take notes during sales interactions.

“I started studying sales every day. I started recording interviews," Cardone says. "I hired my mom, 70 years old at the time, and I said, ''You sit over there and you take notes.'"

After each sales pitch, he would go over his mother’s notes and the audio tape recording and dissect what went well and what went wrong. A year later, Cardone was in the top 1 percent of salesmen in the auto industry in the U.S.

3. Commitment to what works for you

Cardone knew he had to throw himself into his work after getting clean. He even said he needed to become a work junkie. Most people warned him not to do so, but he knew what would work for him.

“When I was bored, when I wasn’t busy, whenever I didn't have something to do or something to accomplish, I got in trouble, he says. "For me, it’s work not to win. People don’t have enough experience winning.”

He believes a key to his success is staying active. Granted, what he calls active others may call obsessive, over the top, or "workaholism." He knows that, and he doesn’t care. He has found what works for him.

Consider your environment, community and work habits to find a rhythm and schedule that works for you.

4. Commitment to being open

Never shy, Cardone will sometimes tweet his gigantic goals out to the world on Twitter. He realizes it may seem like bragging, but he believes there is great power in publicly stating your goals for accountability. Like many, he admits he has days where he doesn’t want to go to a meeting or doesn’t want to finish a task, but if he’s publicly committed to do so, there’s no turning back for him.

“You need to over-commit, don’t under commit, and then over deliver,” he says.

5. Commitment to thinking bigger

Cardone is so passionate about growing exponentially, he wrote a book on the subject, The 10X Rule. Cardone constantly asks, “Is this scalable?” when evaluating a business opportunity or project. He deeply believes people underestimate two things. First, most underestimate how much money they actually need to take care of their family and live comfortably. Second, people seriously underestimate their potential to achieve.

“My biggest mistake in life was that I thought too small for too long,” Cardone says.

6. Commitment to your legacy

Every morning and evening, Cardone writes out his major life goals which range from “Buy a bigger jet” to “Grow old with my wife.” Currently, he is thinking about 100 years from now or 500 years from now. Cardone believes that if you create great work, it will stand the test of time and even impact future generations. His commitment is to something bigger, much bigger.