If you're dragging your feet on a case that's getting a little stale, it's time to start a trial notebook. It doesn't matter if the trial is still months away. If you're a litigation junkie, seeing sections in your notebook like "witnesses" and "opening" and "closing" will immediately fire you up to get moving again on the case. Besides, it's always a good idea to conduct discovery with an eye towards your trial evidence (and the likely jury instructions). So you can't go wrong getting an early start.
You'll find more information here: "A Method of Organizing a Trial Notebook."