A couple of years ago, I attacked this with a sensible (but not brutal) diet and exercise regime. Things went fairly well, and I started shedding the weight.
However, I have only just faced up to the fact that last year, when I was living in London and visiting mum in hospital, the diet went right out of the window – that is now over 9 months ago, and I still haven’t got back into my good habits. Although I keep resolving to start again, I haven’t put in the effort.