Do you have a heuristic for differentiating big rushes from small rushes? I think any time you are trying to perform a task, and some epsilon greater than zero of your conscious capacity is focusing on the ticking clock, then that represents a deficit from maximal focus. I think the deep breathing advice is good for any rush.
https://intelligence.org/files/CognitiveBiases.pdf in part 8 has a note on time pressure increasing the effect of the affect heuristic, but it doesn’t quite fit with what you are talking about (fumbling for keys).
Prior to lurking here and reading the excellent posts on rationality, I had never before considered eating a tomato. I decided that I didn’t like them at a young age, and never revisited the belief. In the past, I figured it was my business and it wasn’t hurting anyone if I decided to avoid tomatoes. Now, I understand that it was an arbitrary preference, that the taste is non-offensive (I may grow to like them), and that they are rich in lycopene (which may be good for you, but almost certainly isn’t bad). In short, I changed a belief I never before thought necessary to revisit. So far, so good.