How do I do BR?

What is your time spent on when you study? I ride the train to work (takes about a half hour) each way. I work on practice test questions, but I find myself dozing off, especially after a long day at the office. I also study at lunch (about a half hour) whenever my co-workers are not having lunch with me. Then, when I get home, I am sort of taking care of housework, other homework (master's degree), working on a project or spending time with family.

What is your studying like? How much time do you actually study? Is it reviewing techniques or working on practice questions, timing yourself? With my schedule, I find that I am not able to time myself on a practice test. Or maybe I should, despite the train announcements?