Know the official post office abbreviations for all 50 states without having to consult a list.

Know the difference between principles based on right or wrong vs. principles based on personal gain, and consider the basis of your own principles.

A 45-year old looks a lot like a 25-year old who's been out all night. And feels just as good about having survived the experience.

Be able to identify the most common breeds of dogs and cats on sight.

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.

Be sure to expose yourself to criticism: A fine polish requires an abrasive.

Be able to keep a secret or promise when you know in your heart that it is the right thing to do.