If it's true that not thinking positive, having a negative attitude, not eating certain foods, then I would have been gone a long time ago, because I was a very "bad" cancer patient.
My inner child was pissed off. I went against the rules every chance I got, kicking and screaming and swearing at nurses (well, some of them deserved it) and telling people out loud that I had the forbidden "C" word and I was going to die.
Whoa! But those doctors were wrong. Maybe I was close to dying (had two Near Death Experiences), but no one can predict your future, really. Not even a doctor.
I was obsessed and talked about the "D" word to whoever I could get to listen. Most would get out of it, but some were cornered and I probably scared them to death. That was a time when the C word or D word was not discussed.
Realizing I didn't want a "funeral", just a "wake", a party maybe, where people would play all my favorite music, (wrote that in the will, too) and I went around making people feel uncomfortable when I told them, "Don't buy flowers for me after I am dead, Give them to me now, so I can appreciate them." What a bad girl I was. I can laugh at it now, but I was pretty indignant back then. Why put hundreds, maybe thousands of flowers on a casket that is put into the ground the day they are arranged? It seemed so selfish to me. Love me now, not when I'm dead!
So, when we come into this world and we are cute little babies, we can get pissed off and scream our heads off and let everybody know just how unhappy we are. And we get away with it. We know what we want and when we want it, like, I want that milk, NOW! and yummy that is really good!! and then we are happy for a while, and then later we are miserable again, or sleepy, or giggly, or sad.... yet free to express whatever we feel. And people love you and care for you and for your feelings.
If it is true that your time on this planet is coming to a close, then why not do what you want? Well, maybe, not use that bludgeon you were thinking of. But, maybe take a stick and beat up the sofa. Listen to the music you want, eat popsicles and pizza or cereal for dinner and pudding for breakfast, wear all mismatched clothes or draw tattoos on your arm or get out your old Barbies and dress Ken in Drag or your old Legos and build castles. And, yes, protect yourself from those who are still stuck in their old ways, if you need to. You have no obligation to keep them in your life. It's your life after all, whatever is left of it, even if it goes long term. Clear out all the things that do not matter to you. It's very freeing to let go.
Take care of that little baby you once were who expressed yourself so freely. And in the meantime grab up all the love you can get for that which is inside you feeling empty and let it fill your heart until it is overflowing. You will be very surprised as the overflow floods those around you, and whether or not you healed of the disease which might kill you, your heart will be healed with the fullness of love as it grows like a jungle garden. Your love and others intertwined in the leaves healing each other.