Try not to think that way Dave.
It could be your last Christmas if this wasn't happening to you (it could be anyone's/everyone's last Christmas), you may have many more Christmases with your children.
Nobody knows the future.
Take each day as it comes, focus on trying to get well and raising awareness to the situation that you and many other people find themselves in.
It might help if you could find someone who knows you to log on and give us progress reports when you are too busy or too tired to do it.
As mentioned earlier it would also help people to get a grip on the situation by posting some documentation (with your personal details blanked out) and maybe a photo or two if you feel comfortable with that.
There is a generosity of spirit around here but there is also an understandable level of cynicism in society in general.
Everyone wishes the best for you but you really need money at the moment and people are more likely to give that if they understand your predicament more clearly.
Keep your chin up and your caps on.