Long before Oracle co-founder Larry Ellison became one of the world's richest people, he struggled to pay something as basic as his electricity bill. But things changed drastically for the struggling entrepreneur who now owns an entire Hawaiian island with an estimated net worth of $256 billion. He has also bought some of the world's most expensive yachts, and remains one of the biggest names in the artificial intelligence and cloud computing boom. Larry Ellison's journey started in a small garage and his success story continues to inspire millions across the globe.