This doesn't work for me, but I think I'm in the minority. I usually write late at night, after all the kids are in bed. This is a silent time in our house, and I'm able to let myself go and have some fun with my characters. In the morning, I have kind of a daydreaming time where I work on plot ideas. They percolate in my brain during the day and I put them down solidly in the eleventh hour, so to speak.
Now I know that real writers should be able to shut out life at will and write like the wind with ten kids in the house, loads of laundry awaiting their tender mercies, and dinner cooking on the stove. I can write under those conditions, and I sometimes do. In fact, you really have to train yourself to do this if you're a mom, because you'll never see any progress if you don't. But my preference, having grown up in a very quiet home in the remote countryside, often spending many hours alone, is to write during the silent time.
I'm curious. When is your favorite writing time? Is your silent time physical, or is it a mental state in which you don't allow yourself to be impacted by surrounding activity?