If you mean that whether I would know if I have succeeded in my attempt, well the answer would be that if I have succeeded, then I would have no perception of conscious or life afterwards unless I wake up again whether in the ER, ICU, psych ward, etc. However, with my method, when my time comes, I am very confident that I will succeed since I know how it works, I've done my research, and practiced, etc. Barring any afterlife or what is on the 'other side', my belief is that there is nothing but just void (similar to what one was before one was born).