Do you believe in some sort of afterlife and if so have you enough faith in that belief?

I believe there is an afterlife of some kind, not quite sure what yet but my faith isn't quite strong enough yet.
I have panic attacks if I think about it too much.

What if when you die that's it?
One minute you're alive than next..nothing.
That scares me something rotten.

I was thinking about Cryogenics yesterday..

What if you get yourself frozen just before you die in the hope of being revived when they figure out how to keep us alive longer?

But..

What then if there is really an afterlife?
You wouldn't be allowed to pass on because your body would hold you.
It would be like standing outside the gates of paradise, never being allowed in but being able to see everyone else in there and new people entering every day.
If this happened and they did manage to revive your body at a later date would you want to live?