Hi Kate,
I can't give you much good advice as I'm in a similar position and struggling too. I know how to and have lost weight, but when I do I am usually really hungry and with the amount of classes I'm teaching at the moment I can't go too low on the food.
However, a few things that do help me:
1. Don't obsess about it too much, if I'm thinking about food, I'm more likely to overload.
2. Plan a little better, have nutritious snacks in your cupboards/fridge that you can grab, e.g. dried fruit, fresh fruit, oatcakes, nuts (though again have to restrict as high calories) etc.
3. Keep busy, personally I eat alot more if I'm a bit bored, example when watching too much TV etc. Luckily I'm quite busy at the moment, but there are things too divert the munchies, give yourself a manicure, hot long baths with candles, go for a leisurely walk etc.
Good luck. Hopefully I can get back on track too, I'm very frustrated as I've stayed the same weight for several weeks now and really need to start seeing the weight decrease as I've got a wedding dress to fit into! I thought my extra cardio classes that I've taken would help, but although my butt is getting smaller, the pounds haven't stopped dropping off yet.
Nicky.