There was a bridge I used to drive over on my way to and from work every day. It was a very tall bridge and I've always been terrified of heights. Every day when I drove over it, especially when traffic was bad enough that I'd be stuck in the middle of it and could feel it swaying, I'd just stick to the lane farthest from the sides and maintain a mantra of it's safe, it's huge, it's going to be here forever, don't be afraid. (Also there was a cool abandoned military base that was visible from it and I'd look at that to distract myself when my mantra wasn't enough.)

Anyway, I still have the same job but have moved hundreds of miles away from there. After I did so, a ship hit one of the supports for that bridge and caused several people to live through exactly the unlikely event I dreaded happening every day during my daily commute. Now I don't ever drive on a bridge over anything bigger than a small river or even creek and, though it's unrealistic to expect this to be fulfilled, hope never to again.