Some days it all just goes horribly wrong

I’m a generally intelligent person (honestly!), so why does something as simple as following items on a checklist throw me?

I’m so paranoid about not being able to start the finicky, over hot, fuel injected engine, that I always miss the checklist item immediately preceding the engine start. Unfortunately the item in question happens to be “BRAKES – ON”.

I swear one day I’m going to plunge straight into the air ambulance. I’m going to be famous for causing an accident where the number of fatalities exceeds the number of people in my aircraft.