Agree, you need to see this woe as for life to maintain, uou can introduce moderate amounts of carbs and then just reduce every now and again to maintain but it's really a lifestyle choice. You need to eat healthy.
I've maintained for years on it, I tend to fall off when something impacts me,,,moving house, changing job,stopping smoking, breaking my ankle and being sendentary and once I'm properly off it for a period, I pile weight back on because I revert to eating crap extensively with no discipline.
Bottom line is stuffing yourself with chocolate, pizza or cake is always going to make you pile on the pounds, but a healthy diet which is also moderately low carb, with occasional treats will keep you at your target weight.
It's really easy to fall back into old eating habits, it starts off slowly at first, and we need to accept that as those eating habits is what made us fat in the first place, and it's still going to make us fat if we do it again.