OP, I have a suggestion which might work. It has helped me a lot.
Don't diet. Take that pressure off yourself. You aren't in the right headspace to deny and restrict yourself and demand willpower.
Instead do these five very easy things
1.) Drink 2litres of water a day. If you don't like water, infuse it with flavours such as slices or orange or mint and cucumber. Fill a jug and make sure you've drunk it all by the end of the day. A lot of our cravings for salt, sugar and quick fix snacks are due to thirst not hunger.
2.) Move more. Absolutely any movement at all. Lift your arms over your head in a gentle stretch a few time when you get up. Step side to side while you wait for the kettle to boil or toaster to pop or microwave to ping. When you put shopping away do a quick 'weight lift' of the cans of beans etc. Do a little dance around the kitchen. Walk around the block. Take your time. Walk upstairs instead of shouting to the children or partner when you need to speak with them. When you watch TV, rotate your ankles or point and flex your feet. Just keep wriggling and moving and getting up and taking a few more steps than you did the day before. With the extra weight you are carrying, a few steps is very beneficial as it is excellent weight bearing exercise. Good for your bones and muscles.
3.) Make sure you eat 10 a day. That's at least 5 veg and 5 fruit but ideally 7 veg and 3 fruit. 80g is a portion. So you need to be eating 800g of fresh stuff every day. Other than that, don't fix your eating habits unless you want to. You could also make a list of all the food you absolutely LOVE that just happens to also be healthy and do some meal plans based on those foods.
4.) Make a list of small non food treats that are easy to have and include several in your day consciously when you might have reached for chocolate. E.g. listen to your favourite song. Watch a you tube comedy clip of a favourite comedian or of cute kittens. Paint your nails, wax your brows, have a face mask, buy a magazine, have a long bath, buy yourself flowers, read a feel good novel or self help book, watch an uplifting Ted talk or podcast, do a 5-10 minute meditation or affirmation session on You Tube etc. Get into the habit of reaching for non food soothers and treats.
5.) Every time you do any of the above - even if you just lift your arms over your head in a stretch or take a sip of water, congratulate yourself and think: These small steps are changing my attitude to my body. I am caring for it now, helping it get strong and healthy.
I've lost 20lbs doing this because if I even think about dieting I have binged by lunch time of Day 1. Diets don't work for all people, so rethinking and having a healthy attitude that focuses on self care is a better way forward.