Flipping the switch

One of my biggest writing challenges is my struggle to make the transition from Mom mode to Writer mode. I schedule some of my writing time during my daughter's nap (my son has quiet playtime then), and I often have trouble leaving behind all of the stresses of the day in order to concentrate on my writing. Instead of working on my WIP, I'll find myself making a store list or doing laundry or just sitting in front of the computer thinking about the meltdown my kids had at storytime or what I need to do to get dinner on the table on time. All of these thoughts get tangled up with thoughts about my story and my characters, resulting in a snarl of ideas that seems impossible to sort out in those few precious moments of writing time.

Certainly this struggle isn't unusual, and I'm sure that all writers, whether they stay at home with their kids or work outside (or inside) their homes, have similar struggles. One thing I've been trying to do to ensure better productivity is to schedule more writing time early in the morning, when the house is still quiet and the stresses of the day haven't yet had a chance to become forefront in my mind. I've been scheduling this morning time since the beginning of April, and although it's been working well, I would like to be able to get even writing done at different times throughout the day. However, flipping that switch from Mommy mode to Writer mode is proving to be very difficult, and I'm not yet sure how to overcome that challenge.

I'm curious. How do you put aside other thoughts so that you can fully concentrate on your writing?