It takes a lot of time to be a good junkie or alcoholic - you spend hours getting the necessary supplies, then imbibing, then recovering, rinse and repeat. That's like eighteen hours of a day. And assuming you get out of that lifestyle before it macerates your heart, you have that Junkie Tunnel Vision, except now you get to use it for something positive: you know how to work tirelessly for one thing. Instead of using that tunnel vision to get high, I use it to make art.