I’m not sure I want to die of a heart attack if I live to old age. I thought maybe I’d use a gun to relieve my suffering so that everything would end quickly, but I’m too scared. Are there any recommendations on how to die without suffering or something like that? Maybe I should leave this world during a happy dream?
Or should I humble myself and go through suffering before I die?
I’m clarifying: it’s not that I want to commit suicide when I’m young or right now, no, I mean when, let’s say, I have one day, a week or a month left to live suffering from an illness, or I know that after a while I’m going to have a heart attack that will definitely kill me.


A big problem with this line of thinking is that in real life you rarely know this, especially while remaining aware enough to commit to such a plan. It’s just a prognosis, based on averages.
Generalizing this back to what I believe is the goal of your question, it’s rarely certain or predictable. When it is, you may already be too far gone to make such choices (hence legal documents like DNR)