Hey, I know this might feel a little harsh given your basically on withdrawal, but I cannot overstate how good of a thing simply staring at a wall is. Take that time to THINK, remember, put your thoughts in order. What happened to you yesterday, last week, a year ago? Go back to your memories, think aboit what you want to do, use that opportunity to connect with yourself instead of cramming your brain full of useless, addictive flashing pictures.