https://www.youtube.com/watch?v=QOXR2q8regEIn all honesty, though, I used to be uncomfortable and anxious about death, and in my teenage years I had a huge existential crisis that lasted for about a year. But after that, there's nothing. No anxiety, even when I sit down and think about it as deeply as I used to.
It's almost kind of normalizing and reassuring to think about death. If I ever get too caught up in life and start taking things too seriously or getting too stressed, remembering that I have an expiration date that may or may not be imminent is a good way to put things in perspective. It reminds me that this problem that I might have is going to end one way or another, and at the same time remind me that I better not squander my remaining hours/years/days. It went from being a source of anxiety to being almost something calming, but it took that existential crisis first.
As for an afterlife, I've found no evidence to suggest there would be one, and an abundance to suggest there is not. Believing the side with no evidence in anything else in my life, schooling or career would be a huge and foolish mistake. I don't see why, besides wishful thinking, this would be any different.
Also, this is a nice thread about it:
http://www.councilofexmuslims.com/index.php?topic=23043.0