Do I need to be addicted to get anything done?

The when the guy in the Apple store warns you about overusing your iPhone edition

Some neurological conditions are linked to poor dopamine production, making you susceptible to external stimuli addiction. In my case, think sugar, cheese and, now, iPhones. If ever I try heroin, it's bound to end up like a chapter of Trainspotting.

I've lost at least three close relatives directly linked to alcohol abuse. I hardly drink (once or twice …