You don't have to worry.
You are either healthy or sick,
If you are healthy, you have nothing to worry about.
If you are sick, you are either going to get better or you die.
If you get better, you have nothing to worry about.
If you die, you will either go to heaven or to hell.
If you go to heaven, you have nothing to worry about.
If you go to hell you will be SO BUSY SAYING HI TO ALL YOUR FRIENDS, and don't have time to worry.
Hi my friend, where are you?
Hehehe...