I never said chocolate and crisps were "healthy" as such but this idea that certain foods are almost "evil" is ridiculous!
Yes the majority of foods have some nutritional content. The only one I can think of that really is basically just empty calories are boiled sweets that are really just sugar and water.
Does nobody think it's at all interesting that it's really only since certain foods were demonised by "diet experts" that we've had as a society a major, fast increase in dietary issues?
As for you thinking "follow the plan the plan works" isn't actually successful, you later say "before they stop following the plan again" the successful slimmers who keep the weight off DON'T stop following whatever healthier eating scheme they're following. They continue to eat - at least roughly - the same way as they did when trying to lose the weight. I lost weight with ww and I'm not familiar with sw but my understanding is that while the details across the slimming clubs vary slightly (I've also done scottish slimmers and a council organised scheme) most of the information is quite similar (because the calorie content of the food we all eat is the same) and I know ww and scottish slimmers both have maintenance plans/advice.
Of course someone who's been overweight can't go back to eating as they did when they were overweight/gaining weight because they'll regain the weight.
It has to be a permanent change to a healthiER diet (by which of course I don't mean weight loss scheme but the overall content of what you eat).
There is an element of willpower involved, your dh may tempt you - and there's no reason you can't discuss with him that you want his support in helping you to live a healthier life and exactly what you'd like that support to be - but as several of us on the thread have said, ultimately it's your decision what and how much you eat.
As I say I've lost weight myself. I found that one of the reasons I ate too much was boredom - especially of an eve watching telly - so I found keeping my hands busy with knitting, cross stitch, cross words, adult colouring was useful. Also having healthier snacks that could be "picked at" in a similar way to the usual sweets and crisps that we can end up eating too much of. So portioned veg & fruit eg sliced peppers, carrot sticks, cucumber sticks, celery sticks, cherry tomatoes, sliced apple, peeled and portioned oranges, sliced banana, grapes... You get the idea. Frozen grapes are like mini sorbets, love them.
I agree with Yonijust - a lot of why you're not getting on and doing it is avoidant procrastination - something all of us do at times - but you have to acknowledge it and decide on a way to motivate yourself out of it.
In terms of avoiding "bad influences" my dd is extremely slim, if anything struggles to maintain what little weight she has - which I now know is partly related to her disability which one of the effects is an increased metabolism. So we have treat drawers organised in the kitchen, a small drawer each for treat snacks. Hers has less healthy, more calorific ones (which actually she rarely eats they certainly need topping up less than mind so clearly another reason she's slim is she's not as keen on this kind of food as others are - but she likes it sometimes) in it, mine has things that are smaller portions, less calorific but still not super healthy things. That way except for when I'm putting things in her drawer when they've just been bought I don't even see them.
I also have 3 shelves in my fridge. One is hers, one is mine and one is shared. This actually came about because she kept snaffling my healthier stuff I was buying in to try and keep on track! Now we both have our stuff we like and the other doesn't accidentally eat something the other was "saving". It also means I don't focus on the less healthy items on her shelf that may tempt me and I stick to my healthier versions.
"so I buy them things that I'm not so bothered about but they love" yes I do that too. Eg I'm not a coconut fan whereas she is so coconut flavoured biscuits, cereal bars are something she likes. Or get her things I can't have - eg haribo. Also I like raisins/currants so I get stuff with those in and she won't touch them.
Little things like this may seem daft but I've found actually help and talking to friends and family with similar weight (or other family members eating "their" stuff) issues have said the same.
As lemonTT says you can even adjust when out and about. Eg fish & chips, you could have just agreed with dh to have a portion of fish, maybe taken batter off, and had a few of his chips? Subway - my dd always gets a foot long, plus cookie and drink. I couldn't eat that if I tried! I get a 6" I'm veggie anyway so I either just get cheese and salad (and it's not a lot of cheese) or the veggie patty with salad and don't get cookie & drink, I grab a drink from the newsagents next door before we go in (more choice and cheaper too), we don't sit in anyway as I can't get on the stools or if I can I can't get off due to my disability, so we go sit on the benches outside if it's a dry day or head into shopping centre and sit and eat in there.
"Your healthier lifestyle may start to rub off on your dh." Yep! Seen and had this happen too. Plenty of weight loss club members who've said they just cook recommended recipes or have tweaked favourite recipes to be healthier - eg leaner meats, low fat cheeses, more veg in casseroles etc And their other halves have happily eaten without noticing a real difference and often ended up also losing weight. One member used to joke her fees were essentially half price for her as she came to meetings and got all the info but both she and her dh were following all the advice and losing weight and supporting each other.
Dd often "nicks" some of my fruit or veg out my little snack bowl on her way by or when I'm prepping which means without me nagging her she's eating more fruit & veg than she normally would. I also put more veg in our favourite recipes which she's never commented on noticing. Have to be careful though as she actually needs a bit more healthy fats than others for her increased metabolism and disability issues. Irony is she doesn't like fatty foods generally - seriously how many teens don't like chips & chocolate?! (She's never liked either, not a fan of potatoes generally).
"And consider an app for recording your calorie intake" omg yes! I had NO idea how much I was really consuming until I started keeping a note as per slimming club guidelines. In my head it was like
Breakfast - cereal and milk (I've never added sugar but I was shocked to learn how much sugar was in the cereals I was having which I THOUGHT were quite plain! After all I wasn't having coco pops & Frosties! But shreddies and weetabix are quite sugary it turns out)
Lunch - in my head "oh just a sandwich and a yogurt" but sandwich was lashings of full fat Mayo, loads of grated cheddar, quorn slices (they're OK cals wise), Branston pickle (scary the cals in this!), yogurt was sugary high fat version, PLUS I was "forgetting" the large bag of crisps and cake I usually had too. 😪
Dinner - "oh just pasta and sauce" but my portion was far too big, was at that point using jar sauces for convenience (was working at this point - but now know that's no excuse as homemade sauce is so quick and easy to make), wasn't having very much veg in it which bulks it out. Or "just stir fry" again carb portion was HUGE, not enough veg and ready made sauces - again switched to home made sauce/flavourings, reduced the carbs, increased the veg.
I also wasn't acknowledging properly the amount of less healthy snacking I was going in the evenings, as I said largely boredom.
Also there were some things I was eating thinking they were very low cal when actually they're not - fruit generally especially bananas, potatoes, peas, beans, fruity yogurts...
Before I went to any slimming clubs I had thought that certain foods would be "banned" and that kinda put me off. Then I was chatting to a work colleague who was doing scottish slimmers and noticed she was eating 😱 cake! And I crassly asked "is that allowed?" Thankfully she didn't take offence and explained she could and briefly how it worked. This lead to a more in depth conversation and I ended up going with her the following week (it was on a weekday lunchtime near our office). And that was the start of me eating more healthily and losing weight.
Both the clubs I went to - and I'm guessing others are similar - discuss and offer ways to manage things like eating out, takeaways, special occasions etc. And it wasn't just the group leader giving tips but members who'd found things that worked for them - have you considered a weight loss club op?