I find it's the opposite. Once I've acquired momentum for my workday I can't really focus outside of that domain until I shed that momentum, which can take hour

I find it's the opposite. Once I've acquired momentum for my workday I can't really focus outside of that domain until I shed that momentum, which can take hours, and then it's sleep time. Mornings are the only time I can learn what I want to learn and not what the man wants me to learn.