Because there is no "it" becomes "a" immediately. You don't care that you shall achieve enlightenment it must feel?Are you Chong cares how you feel yourself in the present mood.Last breath before dying, the most important.
Because of the "no" it will become "an" immediate attention that you do not have to feel the enlightenment that your hearts unto itself. How you feel in the mood last breath before death is the most important.
"no" because it becomes "the" immediately you, don't mind that the enlightened, that ต้องรู้สึกอย่างไร you mind itself. How you feel today mood last breath before you die is the most important thing.