Sorry! That is not under your control. When your time is up, it's up. It doesn't matter what your health is, your age is, or how you lived your life.
A lot of it is under my control. If I were to take a loaded gun to my head and pull the trigger, I would not expect to live very much longer. If I were a heavy smoker, I would not expect to live as long as if I were not a heavy smoker.