Don't get me wrong, I think the quote as presented is hollow. It's certainly not profound by any stretch.
Having thought about it, maybe I'm perceiving things the wrong way around.
When I'm playing games or whatever outside of my scheduled downtime, at least once I'll consciously acknowledge that I should be doing something more productive. But the opposite isn't true. I don't sit there thinking "I could be gaming right now" if I overrun my schedule whilst I'm composing or practicing an instrument. And nowadays, I'll rarely fritter away a whole day gaming unless I purposefully give myself the day off. So in that way, the bad habits are actually the conscious behaviours.
I guess it's like you say, if you're in a good place psychologically and spiritually, a healthy routine will come naturally to you regardless of whether it's written on a whiteboard or not.