Craig is right. Form it into a ball. I place it in a freezer ziploc bag and pop it in the freezer. When I want to use it, put it in the fridge to thaw in the bag. Once it is thawed, I remove it from the bag and let it sit on my pizza pan to warm to room temp and then proceed with the pizza making. Don't notice much difference. I've also been known to go ahead and make the whole pizza and freeze it. I use half sheet pans for my pizza so I'll roll out the dough, add sauce, toppings and cheese. Wrap it in plastic wrap then aluminum foil and pop the whole thing in the freezer. I let it thaw before cooking it and it comes out great.
I could give up chocolate but I'm no quitter!