If you’ve watched my interviews with successful influencers and entrepreneurs, you’ve learned that physical health is a huge priority for those at the top. Perhaps this spurred you to dive into the deep Google pool that includes searches like “the benefits of apple cider vinegar” or “healthy smoothie recipes.” At the very top of that pool is draxe.com, the website of Dr. Josh Axe.

Axe, who started his Nashville-based functional medical center in 2008, has cultivated the site to reach over 12 million monthly visitors. He has reached millions more through his multiple bestselling books, online health courses and corporate wellness programs for entities like Nissan and Whole Foods. He’s also seen regularly speaking at conferences and festivals such as South by Southwest, and is a regular contributor to The Dr. Oz Show. If all of that wasn’t enough, he co-founded BurstFit with his wife Dr. Chelsea Axe, and founded Ancient Nutrition, Ancient Apothecary and Dr. Axe Supplements with his partner and CEO, Jordan Rubin.

I was excited to get to chat with him about how he grew his operations so successfully in under a decade. If you want to become the go-to expert in your field and build multiple revenue streams around your expertise, here are the top seven lessons from my interview with Dr. Axe.

Hone in on your passions.

Axe’s interest in health began when his mother developed cancer in his teens. His passion for natural medicine began later in life when the cancer returned and none of her treatments were working. Since then, there’s been no turning back, and that dedication played a part in his rapid growth.

“I couldn’t really imagine doing anything else. For me, just helping people is getting healthy is such a passion, it helps drive the business,” he said.

Being passionate about business in general can get you far, but those that become the standout brand in their industry often see their work as their “mission” or “calling.” If you don’t deeply love your work, someone in your industry who does will probably out-work you, and it might be time to pivot.

Find a niche within your passion.

Even though natural medicine is already a niche, Axe focuses on his brand around the argument that “food is medicine.”

“Today people are looking for something very specific,” he explained. He shared that people no longer search general terms like “back pain” and instead search for their specific condition, down to the particular vertebrae. He and his team create detailed content answering those very specific questions.