As trite as it sounds, a positive outlook can also extend the life of someone with stage 4 cancer. We all know someone who has lived longer than they were given. Look at Valerie Harper. She was diagnosed with stage 4 cancer, and is now almost in remission. Her attitude during her illness has been nothing short of commendable, and I don't know that I would live out the rest of my life with the same grace that she has shown.