I believe that one can indeed work on two or more tasks at once, but in ways yet to be understood.

Be able to recognize when you're reading or hearing material biased to your own side.

Know where to find the sunrise and sunset times and note how the sky looks at those times, at least once.

When you're in a good mood, bring up the past. When you're in a bad mood, stick to the present. And when you're not feeling emotional at all, it's time to talk about the future.

...there are days when I feel I can do anything and days when I feel I can do nothing. But fortunately for those around me, neither sort occurs very often.

Be able to set a table so that you feel like you're dining, not just sitting and eating.

Learn at least two classic ballroom dances, at least one of them Latin.