Some people beat cancer through a lifestyle change. Most cancers are killed by our bodies before we realise we have them, but if our systems are weakened by poor health, caused by poor diet etc, we become less able to stop them. My brother is a naturopath and has stories about people being cured of cancer through the use of fresh vegetable juices (made yourself and consumed immediately, not the bottled stuff - the enzymes don't last that long). It sounds like a load of hippy crap, but a happy, positive frame of mind makes a big difference (I'm not just being some spiritual tarot card-reading freak here, it has measurable physiological affects to your body's chemistry, which alters the way it performs and functions).
In addition to this try to find a copy of the movie called "What the bleep do we know" by Hopscotch Entertainment.
It a great message for people who would like or need a change of perspective, and explains just how important positive thoughts are for physiological change.