Nearly any small business can scale if demand exists because modern digital tools make it easier than ever to reach large audiences,according to serial entrepreneur Chris Koerner.

Koerner who has launched more than 80 companies, said aspiring entrepreneurs should focus less on finding a passion project and more on building businesses with clear customer demand, even if the work itself is not exciting at first.

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"I like to say follow the profit until you can afford to follow your passion," he said in December on "The Diary of a CEO".

"Ignore passion for a time," he said. "Try to build your passion around commerce."