Set realistic short term targets

taxi driver reading a course manual

Set realistic short-term targets so you focus on the immediate task.

When your energy flags, set yourself a task for the next realistic span of time (say, 20 minutes or half an hour); then give yourself a break.
Alternatively, set your tasks just for the next assignment so that you’ll have achieved a concrete goal.
Review your overall aims at the next available opportunity.

Georgia:

"When time is limited, I aim to 'finish this chapter or exercise' or 'listen to this tape' and then stop for a cuppa.

Paul:
"If I get fed up with studying, I put the books down and go for a run or not study for a couple of days. Sometimes the material can become boring: it’s not you that’s the problem but the books!"