IT'S THE TERRIBLE THREES. I REPEAT: IT'S THE THREES. YOU HAVE BEEN WARNED.

The title says it all. That's it. That's all. Beware the threes. The twos were a fucking dreamland. The threes will break you. My son is about 3 months away from turning 4, and there is an end in sight, so don't lose hope yet. Just stock up on the wine, hunker down and try not to have a nervous breakdown.