Yup Jo, just find something you enjoy, even something completely stupid like trampolining or skipping or walking or dancing to a CD when no-one can see you, or jumping around the house, or climbing stairs.
Well my scales are being nice today - I've really concentrated on eating ONLY when I'm hungry, not when I think I
should eat so that I'm not hungry later on, or eating because it's about time.... I've also cut back on silly carbs and tried to up the protein a bit, which means that I'm actually eating less but feeling more full

I still have to get round to the stopping when I'm satisfied bit, but I don't tend to serve myself very big portions anyway, so I figure that the amount I serve myself is probably just about right since I don't seem to be stuffed after eating.
