You may know Mark Cuban from Shark Tank or as the owner of the Dallas Mavericks, but he wasn't always a billionaire.
He often tells the story of when, as a child, he went door-to-door selling trash bags that someone gave him when they were cleaning out a garage.
In the September 2017 edition of Money Magazine he says the one book that helped him was Cashing in on the American Dream: How to Retire at 35 by Paul Terhorst (the book is currently selling for over $400 on Amazon). The 1988 book advises reducing housing costs and to live on very little a day. Mark says he lived like a student and had the discipline of saving. He also had five roommates living off macaroni and cheese! His car was a Fiat X1/9.
Susan Blakely, the designer of Spanx, became the world's youngest self-made female billionaire and attributes her success to being frugal, prudent and thinking small.