3 Retirement Questions That Keep Millionaires Up At Night Investor’s Business DailyOnly half of American millionaires plan to leave an inheritance – and just one-third consider themselves “wealthy,” according to Northwestern Mutual Planning & Progress Study PR NewswireWhy America’s Richest Millionaires Don’t Consider Themselves ‘Wealthy’ money.comWho, me? Nearly two-thirds of millionaires reject “wealthy” label, says Northwestern Mutual InvestmentNewsHalf of U.S. Millionaires Think Their Financial Planning Needs Improvement ThinkAdvisor