A thing which happens to me very often: I realize I'm experiencing a very real visceral discomfort nagging at me in the back of my mind.
It happens because I will have ctrl+c'd something several minutes ago. My mind subconsciously "holds" onto the info that I have text copied in my clipboard. It's only when I ctrl+v it and consciously discard it does the nagging go away.
I have no idea why it happens or if others experience this too. But I fully agree with the author about starting from nothing and getting rid of the clutter you think isn't bother you but which you're probably subconsciously holding onto.