What's your obsessive THING?

My routine is sacrosanct. I’m about as spontaneous as a house brick.

Mess with it unnecessarily and I will hold a grudge that lasts longer than diamonds.

There is, it must be said, a delicate trade-off in my life between the things about which I am obsessively ordered and neat … and those things which I am not. My office desk, for example, looks like a paper store exploded on top of it but during exams I used to fastidiously line up my pages, ruler and pens with the edge of the desk before I could begin.

Remember when a teacher cleaned the blackboard during class and missed a bit? It didn’t just bug me, it consumed me.

Oh, and let’s not even speak of my food quirks and requirements. Shhh.

I’m a contradiction, but only if it’s stacked in identical columns.

Swiss artist and comedian, Ursus Wehrli, known for his Tidying Up Art

This gallery will astound. Clever.

What are you obsessive about?