Once you start losing weight you'll be so proud of yourself you'll have the motivation to keep going.
For your dinner have chicken, meat or fish with veg and instead of starchy carbs like pasta rice and potatoes put the meat on a bed of spinach leaves, rocket, lettuce, lettuce or a mixture of leaves. If you feel you would miss having a sauce or sauce type dressing on things like chicken you could add a few, just a few drops of pomegranate molasses, balsamic vinegar or other vinaigrette dressing to pep it up.
You can make oven chips from celeriac.
For lunch instead of sandwiches have homemade soup and a salad.
A good breakfast would be a boiled egg, with salad leaves if you don't mind that first thing in the morning. Or porridge cooked with water with a little milk. Or low fat natural yoghurt with berries or half a banana and a teaspoon of protein powder eg hemp or rice protein to keep you feeling full for longer.
Although a healthy low carb diet probably sounds unappealing your tastes will change.
Your best foods are
Unlimited green veg, salad veg, leaves
Chicken breast, steak, low fat mince, pork chops, quorn, fish, eggs
Chickpeas, lentils, kidney beans
Barley and quinoa
Small quantities of avocado, olives, lower fat cheese, butter and dairy
Very small portions of very dark chocolate for a treat, rice cakes or unsweetened popcorn.
Berries, apples, papaya, watermelon, oranges but don't eat too much fruit.
Cinnamon tablets are beneficial for blood sugar control. You can buy from health food shops or online.
Also chromium supplements. You are probably deficient. Chromium is supposed to slightly reduce cravings for sugar.