I've been hearing about Carl Hart for a while. I can't find an answer to if he's ever tried stopping heroine use? I would expect one of the first things to com

I've been hearing about Carl Hart for a while. I can't find an answer to if he's ever tried stopping heroine use? I would expect one of the first things to come up in a the conversation would be something along the lines of "yeah, I took a break for a month last year. It was easy, I had no cravings or other problems."