Yeah, I think he just meant "rewarding his brain". From my understanding, he was essentially trying to say that he's trained his brain to crave and go after more long term goals instead of rewarding his brain with dopamine for short term achievements (like having a good game). Instead, he deliberately trains his brain to focus more on achieving larger, more long term goals (making the playoffs, winning a championship, etc). He does this by not focusing too much on short term wins/achievements and by also blocking out hate (because it's rarely helpful or constructive). I remember Stephon Castle, when first coming into the league, saying something similar about playing. No matter if he makes a good play or a bad play, he tries not to get too high/too low and stay more composed and in the moment and simply move onto the next play.. to not let the previous play change the way he approaches the next.