Stress is a killer, pure and simple. We extol those who work hard - hard work is the key to the American dream - but hard work kills people. I credit stress and a sedentary lifestyle for causing my colon cancer. It will cause heart troubles, obesity, depression, and any number of other physical and emotional difficulties. Here's another thing I've learned: It's not worth it. I admire those who have been able to achieve a solid and secure retirement through their working years, but to achieve it at the price of their health, either physical or mental, is likely not worth it. I want to enjoy retirement, not spend it debilitated and suffering. If that means fewer dollars but more days in the sun, it's the right choice.