Oliver’s (age 81)  lesson: Do one thing at a time, or you get “stress and chaos.”

It’s a scientific fact that you can only think of one thing at a time. Accept that  fact and work accordingly. Make a list of your projects and follow each one as far as convenient, then tackle the next. Many people take pride in handling several things at once without a plan. Their attention is constantly redirected, allowing stress and chaos to build, with nothing completed.