Sometimes I wish I had an off switch. Something on the back of my neck that I could flick to stop me thinking too much. I wish there was a way of powering down my brain, in the dead of night when I’m trying to sleep, or tying myself in knots fretting about the future. My mind has a habit of going into overdrive, often at the most inconvenient times. I’ve had friends tell me I think too much, or too deeply, that I wind myself up until I’m like a compressed…