One of the biggest challenges for retirees is figuring out how to pay themselves. For years, it’s save, save, save, but when it comes time to pull money out of retirement accounts even people who have saved adequately for retirement tend to freeze. Learn more: Retirement planning — a step-by-step guide Starting next year, Vanguard has a solution: Through a collaboration with TIAA, it will offer a new retirement savings option for participants in its 401(k) plans. In simple terms, it’s an investment pro ...