When Greg Daily found himself homeless as a teenager, becoming a successful entrepreneur seemed an impossibility.

Aged 19 back in 2001, for six months he slept wherever he could in Minneapolis.

Short of money and struggling to find long-term employment, Daily couldn't afford to pay rent. So he had to ask friends and acquaintances if he could sleep on their sofas. On a few occasions he had to make do with a kitchen floor.

Business, though, was in his DNA.

"My grandfather sold brooms out of the back of a van," he says, recalling riding with him as young boy, as they would travel to sell cleaning equipment.