Lee Iacocca once said, “Business, after all, is nothing more than a bunch of human relationships.”

But relationships don’t happen by chance. Just as a marriage isn’t likely to survive without being nurtured, our other personal and professional relationships need attention too. They can slowly erode if left to languish on the backburner.

“Your reputation is like your skyline,” explains businessman and Shark Tank investor Daymond John. “When you drive to the city, everyone can see it.”

In John’s opinion, neglecting relationships is one of the biggest mistakes you can make in business. In fact, he thinks relationship capital is the single most important element to success.

To learn more, check out John’s Big Think video, Why Savvy Business People Build Relationship Capital.