Coping with ailing parent.

I guess I am one of those people for whom coping with ailing parent can be tough. Every time my father needs to be hospitalised, I feel paralysed. I think why so early? Why me?
I know this is a perpetual cycle, many people have gone through it, many will, but I can not take it in my stride; and I am not sure whether it should be taken in one's stride.