Being single, I rarely go all out and cook something big that I'll be eating for weeks. Most of the meals I cook are 1-3 servings at most, so I don't freeze much.
I do freeze bread, because the loaf will go moldy before I ever get through it. I just take a few slices out and put them in a baggie on the counter - the rest stays frozen.
As for leftovers, that's NEVER a problem for me. These guys take care of everything.