The title says it all: what is actually going through your mind while bombing a descent? For the sake of discussion, I will define "bombing a descent" as an activity in which the rider is tucked and going 40+ MPH (65+ KM/HR).

Backstory: I've been riding bicycles on the road for about 10 years, but for various reasons I'm fairly new to fast descents. I hit 45 MPH a few times this season, and it was amazing. I watched videos, read about techniques and safety, and was getting much better.

Then, I had a minor oopsie on a not very steep or fast descent. Nothing broken...other than my pride. Now, my mind fills up with bad thoughts when I hit the top of the hill: I imagine my tire flatting, hitting a deer, or my frame asploding. It makes descending far less fun.

So this is a question about mental rather than physical technique: for those of you who enjoy bombing descents, what do you think about while going down? Is it the technical aspects of the descent, or something else entirely, or perhaps nothing at all?