"You need not absorb your whole consciousness in eating and taking treatment. Some effort must be made in that direction, but, ultimately, the reason for so doing is so that you can come to the point of fixing your mind in Krishna. You are not ready to give up your body yet. Why take the risk of coming back again, when you could be taking full advantage of this body and mind, even in your present condition, to increase your remembrance of Them and not have to return again to this material world? This should be your motive to make the effort to live longer.
(Collected Letters to My Disciples, Pg 167, 2nd Paragraph)"