Good news—you don’t have to invent a brand new product to start a business.

Did your plumber invent the plunger? Probably not. Instead of a brand-new product, he or she offers skills that can make your overflowing toilet problem a thing of the past.

Jeff Bezos didn’t come up with the idea of printed books, but he offered a revolutionary service that connected customers to vendors online.

Rockefeller didn’t reinvent oil drilling. Instead, he innovated a new, horizontal business model that effectively buried his competition.

Remember—the foundation of successful entrepreneurship is finding solutions. Sure, you might invent a brand new gizmo that solves some of the world’s problems. But you don’t have to.