Per Petterson said this quote

I was scared. Not of being dead, that I could not comprehend, to be nothing was impossible to grasp and therefore nothing really to be scared of, but the dying itself I could comprehend, the very instant when you know that now comes what you have always feared, and you suddenly realise that every chance of being the person you really wanted to be, is gone for ever, and the one you were, is the one those around you will remember.