Addict is never really cured. Once you're through with addiction, the cravings are there for life. Whenever you need to release your steam the craving for drug kicks back in.
My mentee is coping with that through writing, so sometimes he will not come to work on time - because he's setting his mind straight. So our agreement is that I don't care about his schedule - as long as his work is done according to specified parameters.
I didn't say I don't act differently towards him. I said he doesn't get preferential treatment in a sense that I won't be commiserating him for being an ex-addict. Instead I raised his tempo of learning while gently guiding him through the finer intricacies. But I demand highest quality of him. I also look out that nobody (especially superiors) will pick on him since he is pretty introvert - and I don't want him to slip back due to some extrovert having a bad day.
This guy needs to build character, courage and ultimately self-confidence. And not making it hard for him, plus helping along the way if possible is one of my goals.