Two biggest days in your life are the one you are born and the one in which you die. The older you get you start to realize that the end is coming, and so you try to focus on what is really important. Once the brain dies we haven't figured out how to bring it back quite yet, but it has been reactivated in animal studies to an extent. So in the future things may be very different.

What happens in that day of death? Only those who die actually have any idea. It will be interesting and terrifying all at the same time. Personally I think there is something after, and some how the spirit or soul is interconnected with the brain. How? No one really knows... Then again maybe there isn't anything...

I have witnessed many paranormal things that make me believe there is something else out there. Is it us postmortem or could it be some transdimentional creatures we are unable to see messing with us? But I think the best thing to do is worry less now while you still have life left, and decide to be happy in spite of life's little challenges.