Do you know, generally diets don't work. Because all they do is restrict you, you lose weight short term and then you go back to normal habits and back comes the weight. And while dieting, all you do is think about food and what you can't have and calories and scales etc. You want that to end. You want to end the diet and not think about any of that and when you do, well you know how it goes.
What you need is to adjust your lifestyle longterm so you don't have to restrict or diet or put yourself through this over and over again. Make exercise a normal part of your life. Stop using the car, go out walking, join a gym, take up a sport with your partner/a friend, go swimming, something you can do regularly as part of your lifestyle not a weight reducing exercise. And look at how you eat, what you buy, what's in the house and assess how you can make that healthy for the rest of forever. Not cut out all the lovely stuff and crave it for the short term, but eat healthily and have treats occasionally.
For me, I stood in front of a mirror, butt naked and thought, well, you're as young as you're ever going to be. You can't fight ageing, gravity, childbirth, breastfeeding etc but you can control the rest of it.
I bought some running shoes the next day. I didn't diet.
I'm the fittest I've been, probably ever, love running and can look in a mirror without cringing.