I'm a strong advocate of humor. When I was 12 years old, my mother's best friend was diagnosed with stage IV breast cancer, at a time when there was very little treatment to offer. She told me she was going to be optimistic and laugh every day. There wasn't any research to prove that laughter helps your immune system, but she thought it did. And instead of dying in five months, which was the amount of time doctors expected, she lived for 21 more years.
Laughter is a way to reduce both fear and stress.
It's a powerful addition to anyone's treatment plan. I'm a believer that it should be used every day for the rest of your life. Not smoking, and staying away from secondary smoke. They should also exercise three times a week for an hour each time, with power-walking being the perfect exercise to do. They should have a low-fat diet that includes poultry.