A former retail worker has turned his dream of financial independence into reality by building a £1million fortune in just four years.

A chance observation changed everything for Lewis Cromptom, 35, Norfolk. He told Express.co.uk: “When I looked at my boss’s boss, I saw a stressed-out man who wasn’t paid that well. I didn’t want that for my life.”

This realisation led him to take a risk and put half of his annual salary—£10,000—on a credit card and invest it in something that…