How did people go from broke to their first million according to these interviews?

The common path from broke to a first million, as these people describe it, was to start small, reinvest every dollar, and keep working other jobs while the business got going. Andy Frisella started his business with $12,000 and no investors, made almost nothing for years, and took bartending and side hustles to keep things going. Anastasia Beverly Hills' founder put every dollar back into the business and did not buy cars, while the Spanx founder started with $5,000 she had saved from selling fax machines door to door and self-funded the company. Others got their start by leaving a W2 job to do the same work for themselves, or by reading their current job as paid training before striking out on their own. One Chicago guest built a bath and body business that sold millions of units, and that was what made him a millionaire.