dbl - even though you haven't regained all the weight, you are sort of proving the point
? Each time you diet it gets harder and harder, because set point, because loss of muscle (you typically regain fat when you regain lost weight, not the muscle you lost) - age leads naturally to loss of muscle also (menopause has a dramatic effect on this, hence women;s body shape often changing to flat bum (big muscles there that deteriorate) and round tummy (best remedy is weight training). I also believe the body gets more efficient and conserving fat the more you threaten it with starvation by dieting.
measles The alternative - IMO - is to take an 80:20 approach to diet...don't ban anything but aim to make 80% of your diet nutrient dense, as fresh and unprocessed as possible. Then if the 20% is made up of doughnuts, pizza and wine then it's ok.
Find some form of movement that you enjoy and do it regularly.
Listen to what your body likes in terms of food and exercise and sleep - eat mindfully. Often the things we think we love but shouldn't be eating - eg a McDonalds, when eaten slowly, really tasted and savoured....isn't as great as we thought! And often if you slow down and savour, you start to recognise how much is enough, rather than consuming the entire plate on autopilot.
Don't make appetite wrong, it serves a purpose just as the impulse to sleep or pee does...but use what you know about nutrition when deciding what to eat - continual cinsumption of crap does not satisfy your appetite because it isn't giving your body what it needs...plus there's the whole sugar rollercoaster/cravings it sets off. And often when we get into that cycle we don't even really enjoy those foods because there's a whole sense of guilt or rebellion or pretence that we aren't doing it, which is insane. At least if you are going to eat the foods that don't serve your body as well as others then relax and properly enjoy it!
If you do all this I think your body will eventually find its healthy weight, though that may not correspond with what you think it should be and may be higher than if you had never dieted. You will certainly be healthier and more relaxed about food!