Expert: Joseph Valente

Joseph Valente founded ImpraGas when he was just 22 years old. His book, Expelled from the Classroom to Billionaire Boardroom, became an instant bestseller with his first-hand recount of being expelled from school at 15, becoming a plumbing apprentice, launching ImpraGas, winning TV show "The Apprentice" and gaining Lord Sugar as his business partner. Valente took back full control of his business in 2017 and has since tripled the company's turnover.