We must be careful to affect others properly with our personalities. A child should be taught to laugh. Laughter makes one more healthy. It causes the heart to beat faster and sends the blood bounding through the body. When a person laughs, respiration is increased, the eye brightens, the chest expands, bad air is forces out of the lungs, the internal organs are caused to vibrate, etc.
Laughter has a good effect on the liver and gastric juices.
In some cases physicians have prescribed laughter. A cheerful spirit at home will help to create a proper state of mind and a proper state of mind can create proper manners. Being punctual is one of the essentials for good manners, for not being on time is one of the great injustices that one human being can do to another. Lack of promptness and punctuality is really stealing. It is stealing the other person's time.