I'm definitely a night time person for sure. I work evenings, so by the time I'm off I still have energy which I use to go in on my personal projects. I also try to utilize one of the assets of my personal projects to make a bit of extra cash on my off days from work, so that keeps me productive throughout my off days.
I have a lot going on that requires my attention, so to the biggest part for me is finding a consistent level of productivity while also balancing everything out so I don't get burnt out by over productivity ; for that's when my work begins to drop in quality.
Huge ambition + productivity can be a potent combo, but it is one to keep balanced :)