Just chiming in that I am in this boat too. I find it easy to fast at the office, provided there's not some ridiculous snack brought in by coworkers. However, at home the sheer amount of food I see while I'm preparing it for the kids, who constantly want snacks, makes it difficult for me to resist eating. I've had a bit of success by "skipping" some meals and only eating the kids' leftovers.
The stress of raising kids doesn't help either.