Keep your mind open to change all the time. Welcome it. Court it. It is only by examining and reexamining your opinions and ideas that you can progress.

When dealing with people, remember you are not dealing with creatures of logic, but creatures of emotion.

Begin with praise and honest appreciation. Call attention to people's mistakes indirectly. Talk about your own mistakes before criticizing the other person. Ask questions instead of giving direct orders. Make the fault easy to correct. Make the other person happy about doing what you suggest.

If you want to know how to make people shun you and laugh at you behind your back and even despise you, here is the recipe: Never listen to anyone for long. Talk incessantly about yourself. If you have an idea while the other person is talking, don't wait for him or her to finish: bust right in and interrupt in the middle of a sentence.

Your smile brightens the lives of all who see it. To someone who has seen a dozen people frown, scowl or turn their faces away, your smile is like the sun breaking through the clouds.

So, to prevent fatigue and worry, the first rule is: Rest often. Rest before you get tired.

You can make more friends in two months by becoming interested in other people than you can in two years by trying to get other people interested in you.