Mari,
How old are your kids? I have a three-year-old, whose birthday is today so I'm definitely not starting with my good resolutions till next week.
I'm not a SAHM like you, but it occurs to me that if you're home all day with more than one kid, I can definitely see where you might be overeating just from stress (that's what I often do when my daughter is fussy and I'm already tired from work). I know for me, stress is the single biggest reason I overeat.
Gina - you're headed to 120? That's awesome...I haven't seen that weight on the scale since I was 17. Good luck!