Knot.

Everyday I tie a knot in a piece of checkered shoe lace round my wrist, and everynight, before I clamber into bed, I wrestle it apart again with my teeth. It's one of eight bracelets wrapped around my left arm throughout the day, each of which means something to me, and lead me to someone crucial in my life. A few weeks ago I went a few days without wearing any of them, and it wasn't long before my wrist started to throb with pain. This probably means they've changed it, some would say damaged it, over time. But I'd rather wear these for the rest of my life than fix whatever harm they've done and detach myself from memories.