I'm not saying you're wrong, but say someone has a mental condition and knows it. His doctor knows it too. Patient doesn't appear to be able to stop bad behavior. You bring in a drug and the behavior stops, seemingly with no effort. What is that? Let's say a few people say they ivercame their cindition through sheer "will" but statistics say most can't without drugs. Is it an issue of bad character, character somehow being apart from biology, or is it almost completely biology? If an ADHD can cure himself why not a schizo? What's the difference? I don't have an answer, I'm not saying that, but so far I'm leaning strongly towards most everything being "genes." Most people almost get angry when you suggest this, especially left leaning folks, no, we are definitely born as blank pages to be filled by socialisation and our own "will." But what if we are born and our book was already almost completely written and we are just living out the script and we have little agency? It seems impossible, and yet the thought lingers for me...
They say substance abuse is not a disease but users will say they simply seemingly lose all agency with substances, free will becomes way less. Almost all say they simply can't touch anything again for all their lives because "the gene" is there and is going nowhere. If it was all character they could just as well go to moderate drinking as abstain completely but history shows that is rare.
I always say to people, why are you mad at so and so because they don't act the way you would like? It's almost impossible to change people, it seems close to impossible for people to change themselves, no matter how good character they have.
Just some thoughts 
Not saying you're wrong either. I have a family member who is bipolar 2 and depressive, and likely an alcoholic. When he goes into a depressive state, it's an entirely different human, who will make decisions that have terrible consequences. Never sees the big picture, things become clouded, and the destructive and self medicating behavior begins. It's a cycle. Then, he hits a bottom, fixes stuff, eats great, exercises, feels awesome, then in 8-10 weeks it happens again. Started two years ago.
The difference is this person is in denial about their condition, always blames stress, and things a change of scenery, etc will make it impossible to happen again. But it always does.
dj is very aware. Maybe when he's in the "impulsive" moment, he doesn't know it's wrong. Or he does and says "fuck it" and doesn't worry about the consequences. But it always appears he's trying to drug his way out of every challenge he faces.
I could be be completely wrong, but I think he'd do much better switching to more hybrid training with vigorous (not steve) cardio, eating better foods that don't spike blood sugar, and trying to work towards something meaningful.
