I have no personal experience with cancer and the few people I have 
known who died from it were not particularly close to me. With that 
qualification, permit me to just say what I have gathered to date.

I believe if so diagnosed I believe I would fight. I would seriously 
consider a raw vegan diet at a retreat or institute that closely follows 
in the Ann Wigmore tradition. Maybe some cooked meat as well, or maybe 
some raw, but if so, then very limited amounts. I would also consider 
Gerson's juicing as another way to get concentrated nutrients.

The theory is simple: lots of nutrients high in enzymes, and colonics to 
  help remove waste. Instead of treating cancer, they try to get the 
body to heal itself with high doses of natural food. An advantage is 
that natural food therapy conflicts little or not at all with 
traditional treatments.

On the psychological side, I would re-read Effie Chow's book on Qigong 
and perhaps try to also follow her ten suggestions for good health. You 
may be surprised to hear that daily hugs are one of them. I think it 
also noteworthy that before she herself will treat a patient diagnosed 
as terminal, they must first have a compelling reason to live.

Just what I have gathered to date and hope to never need. I try to eat a 
combination of paleo and raw, but the operative word is "try".