I used to have this fear all the time. I worried every time my T had to get in his car, that he'd be in an accident and die. Every time there was a story in the news I'd check to make sure it wasn't him or his car. Then I had a dream once that another T had a heart attack and died. I think for me, just trying to engage my rational brain helped. Yes, he could get in a car accident and die. But so could I. And really, what are the actual, statistical odds? Pretty slim. I'm more worried these days about him retiring, even tho we've talked about it and it's a long, long ways off. He's more of a workaholic than I am so I'm pretty safe.