Unwind every night for a while too. Some guys had a beer in the hotel bar, some worked out, some watched TV. Get away from the books for about 90 minutes. On the weekend, hit a restaurant/bar with the rest of the class. Find a local tourist attraction to visit. Basically take the day off.

These are the most common reasons I've seen for washing out:

Thinking the CRJ sim time you had made you Maverick (doesn't work well for the ERJ)
Studying by yourself and not in a group setting
Worrying about systems while in indoc (learning memory items and limitations is ok)
Never giving yourself a break.
Thinking like a CFI and trying to teach the aircraft to the examiner and digging yourself into a hole.
Lack of overall jet system knowledge coming in. (This is where the Turbine Pilots manual comes into play)