What if your audience was yourself - but on a really bad day?

We were on our way home after viewing a house.
"Sharp right," said the satnav. "Oh no," I thought. "That's the narrow lane again."
50 meters later, we came up against a line of cars, no way of passing them. I had to reverse these 50 meters. I feared and hated that moment.
The house was lovely, but the area around it was built for big cars and confident drivers. Not me.
Whatever you build - one of the better design questions you can ask is, "could I still use it if I was having a really bad day?"