[datameta]

What works better for me is to try to do it every day in small amounts rather than herculean efforts a few times a week. As others have mentioned, spaced repetition is key. A habit is much easier to use for learning than just the constant reapplication of discipline. I'll highlight what I've learned about learning and what try to keep in mind.

* Proper sleep is highly important for memory consolidation and recall.

* Exercise (even walking) improves learning efficiency, mental clarity, and motivation.

* Pomodoro technique (I prefer 43-7) allows one to do sprints of learning and sustain the overarching session for longer. Unless I'm in flow, in which case I let it carry me forward without stopping.