Hi, as no one else has replied I thought I would try. I am 51 and lost just under 2 stone last year, I followed a low carb diet (Blood Sugar Diet). My BMI was almost 25, I am small boned and felt terrible.
My tips are to take measurements, weigh yourself. Keep a food diary / exercise log / mood diary. Set short term goals, so 7 lbs at a time.
Having tried and failed does not mean you won't succeed this time, it took me three attempts before I really found my mojo and stuck to it.
What I have learnt about my body is that it really doesn't need 2,000 kc or whatever it is an adult woman is supposed to need. Age 51 and not exercising very much (bit lazy) I simply don't have the muscle tone I did naturally in my 20s. I can eat very well on 1,000 kc or even less. Protein, good fats, tonnes of green veg and small amounts of carbs. If the kids are having spaghetti bolognese so do I but without the spaghetti.
I feel so much better. This year I plan to lift some weights, and get some muscle tone. Your appetite and taste buds can be retrained. I prefer two or even one large meal a day now, rarely have 3 meals.
Best of luck and you can do it, clear out your fridge and cupboards of temptation and find healthy proper unprocessed food you enjoy. Try to see it as the beginning of a healthy chapter and not something to be dreaded.
This is long! I did see an article in Sunday Telegraph about a woman in her 50s who seemed very sensible, I think Annie Deadman (not sure). She has been doing diet and fitness for years, you might find her inspiring. I was thinking of trying her exercise plan.