Temper Tantrums

Oh Boy!  Diana has entered the temper tantrum phase!  I feel like this is way too early for this but maybe I am wrong.  Today when Diana didn't get her way, I wouldn't let her play with something that she wanted to, she literally threw herself on the ground, started crying and banging her hands on the ground.  I was shocked she was doing this and just stared at her.  Luckily I was able to easily distract her with a different object but oh my, I am not ready for this!