Fixing your finances is key to any new year. David Bach, author of his eponymous 2004 book The Automatic Millionaire, is out with an updated version. Bach's advice for 2017: Automate your finances. "It's so much easier now to make your financial life automatic," he said, referring to the helpful role smartphones play in money management. Bach also breaks down the math behind compounding interest and why young people who save just a few dollars a day can become millionaires by the time they retire.