Taking a “set it and forget it” approach to retirement planning works in some areas, such as setting up automatic contributions to retirement savings so you don’t even have to think about it. But in other areas, it’s not the right approach. One of those areas has to do with actively “stress testing” your retirement plan to identify weak points and make adjustments as needed, according to Rob Williams, head of financial planning and wealth management research at Charles Schwab. “Even when your retirement ...