I had had big plans to go on a diet before Christmas. Since I've been here I've been eating out a lot and I've gained a few pounds (well, more than a few). I've put the exercise bike where I can use it, got the stepper out, pumped the tyres on my bike - and ignored the lot, so a diet seemed a good idea.

The trouble is, I haven't done anything about it and Christmas is round the corner. I love Christmas, but it's also the time when I gain five pounds - Christmas cake and mince pies take a toll.

So in the new year, I'm going to have to do a diet comparison and work out which is the best diet for me. I've tried low fat and low GI and low carb, and they've all worked up to a point. Maybe what I really need is an injection of willpower.