Stacey Abrams met her business partner, Lara Hodgson, in the lunch line at a conference. They struck up a conversation, became friends, and went on to start three companies together, in professional services, manufacturing, and FinTech. They learned a lot along the way. In their new book, Level Up: Rise Above the Hidden Forces Holding Your Business Back, they share tons of hard-won lessons. By describing their successes and failures, they hope to smooth the path for other entrepreneurs, especially women and women of color.