It's entirely possible to start a business after age 50, and Kerry Hannon profiles 20 successful older entrepreneurs in her latest book, “Never Too Old To Get Rich: The Entrepreneur's Guide to Starting a Business Mid-Life.” ... “Most people who did it say it's more work than they imagined,Starting a business is a good way to keep up with living expenses, especially since you can earn full Social Security benefits at retirement age, currently 66, while continuing to work