how humor can effect a person in a very positive way

In this video, a doctor talks about how humor can effect a person in a very positive way. He describes some situations where humor has been used to diffuse uneasy situations and provide a positive outcome to a seemingly negative situation. In one instance, the doctor tells of a time where a woman was about to go into surgery and was nervous. His comments to the patient made his colleges burst into laughter and in turn, made the patient feel more at ease about the coming surgery. In another instance, the doctor tells of a man who was very depressed and was about to commit suicide. Once again, humor was used to break the tension of the situation and provide the positive outcome of the man deciding against suicide. The main point that the doctor is trying to make in this video is how humor and healing can change the way a person thinks about any given situation and can positively change the outcome of that situation.