I am 51, and find the only way is to attempt a really positive approach to life in general (fake it till you make it), getting active and into sport, find something you like, anything, walking or swimming, tennis, yoga, dance fitness, Nia, Zumba, couentry walks… then start doing it religiously twice a week. Then build up to 3, then 4-5 times a week
now it has become a habit
to be able to enjoy these activities you need to fuel your body right, so don’t think about restrictions but rather think about a nice combo of carbs, protein and fibre
now healthy eating (not massively restrictive, just generally more healthy whole food choices) has become a habit
stuff happens, you go out with friends, you drink an entire bottle of wine and a large pizza
but it does not matter, it’s just one day , you have not “ruined everything”
you find after a few years that you have more muscle, less fat and better health , less belly
but it’s a mindset change that is needed, thinking about fun things you could do, and lovely (but healthy) things you can eat.
so many people talk themselves into miserable diets, that just makes them want to rebel
so for me, the above worked. But it took time. Getting knocked down, then getting up again.
but I’ve become someone who loves exercise, and who thinks pasta with spinach and mushrooms is more delicious than a takeaway
(I used to love takeaways and restaurant food, lots of drinks and sleeping late, and it showed)
good luck