Although nearly half of working women in the United States are now their household’s main breadwinner, the majority of women still aren’t raised to think like breadwinners. That is the premise behind the new book “Think Like a Breadwinner: A Wealth Building Manifesto for Women Who Want to Earn More and Worry Less” by author Jennifer Barret.  Barret is the Chief Education Officer at Acorns, a financial app.  Barret is also the founding editor of Grow, a popular money site aimed at millennials.