I'm not worried about dying

Our translation

As I didn't worry about being born, I don't worry about dying.

I wasn't worried about being born, so I'm not worried about dying.

Our comments: 

The first is more accurate, but we think the second version sounds more natural, and that it is probably a better translation of the original message.

Original

Como no me he preocupado de nacer, no me preocupo de morir.