Johnny, you make a great point there, about volunteers who've conquered an addiction... I did consider this when deciding to apply for the position, and I even used it in my essay on my application. I am guessing they liked this too.
Are you exercising at all? My therapist is making sure I get up off my arse at go outside every day... Lol. It's not that I need to lose weight or anything, but it just boosts the good chemicals in the brain. Walking 30 min a day is enough probably.