I have worried about dying all my life. But I find the closer I get to actually doing it, the less I worry about it. Which is passing strange. I still don't want to do it, though. If you know of any way to avoid it, let me know, please.
Having said that.....
1. You either believe in an afterlife or you don't. If you believe, you should have a rough idea of how you'll spend yours. If this makes you nervous, it probably would be wise to consult an expert.
2. No matter how old you are, you have no excuse for not having a will and other basic arrangements on paper. None. Young, healthy, successful people die every hour. Don't let your sloth -- or sense of denial -- make things worse for loved ones who will have to deal with your demise.
3. Financially, since I have no children, my goal is to work things out so the check to the undertaker bounces. Mrs. LC and I have been spending a lot of money (by our standards) after retirement. Splurging on stuff like travel, nice restaurants, paying people to mow our lawn and scoop our driveway, that kind of thing.
Basically, I cannot imagine lying on my deathbed and being thankful I didn't spend $1,000 extra 10 years earlier to go first class just to avoid 9 hours of misery in a cheap charter seat.