Your writeup has touched a part of me, Positivity is one thing we should go with as a companion, a positive person speaks life in a critical situation If we profess negative things it might discourage the sick and this can cause depression which may eventually lead to death, I am so sorry for your father, it seems like a misnomer for someone who has been taking care of his health to find himself on the sick bed but that how life is it is only God that protects. Good Luck friend