I think it is normal to fear death, otherwise, we wouldn't survive, right? I also sometimes fear about the death of others more than myself.

But what happens is that, in "normal" times, when I think of death, I find the idea unpleasant, but the thought lasts for relatively longer time, with less intense emotions, and even I talk back to the idea with logic: "at the end, this is life, it is unpredictable, and no one will live for ever, anyway!".

But sometimes, and this happens to me at least 3-4 times a year, I feel this sudden, short, and intense surge of emotions that I will be literally shaken and panicked (usually it happens when I am about to fall asleep). I think this is related at some level to the idea the I keep thinking about most of the time when I am not engaged in something distracting my thoughts, that life is slipping away from my hands; that I am not living it with all that it can offer to me. So, I am afraid to die before I have the chance to do so, and then be forgotten forever.