We are all on 'barrowed time' - we're all terminal - just some sooner than others - as it is said "...it is appointed once to die...". Or in more modern quotes "there are only two sure things - death and taxes."
I'm not trying to belittle the dying process at all, just to let you know from what I said above. Personally, I believe in God, and know where I'm gonna go when I die, but because we're not suppose to proselytize, I presume, etc., I had to add both of those comments above.
And...as everyone has said - take one day at a time...that's the only way to take it...
A quote I just found:
Please, "Don't Worry About Tomorrow. No, you don't know what tomorrow brings, you may not even know if you will be here on earth tomorrow; but do know that tomorrow is taken care of. You may not be in the place where you want to be, but in this journey that we are on (life), you will always get where you need to be."