For me I found it most helpful understanding why I have got such pull towards carby food, bread, pastries, potatoes. Understanding it is not inborn gluttony or lack of willpower helped me take action without feeling guilty or inadequate. Essentially people ‘predisposed’ to weight gain have higher baseline levels of insulin which your body stops registering after a while. Because of high insulin present most of the time, body is unable to unlock plentiful energy source from own fat deposits, but instead the cells are literally starving all the time. Sugar (incl. simple carbohydrate) gives a quick energy (glucose) rush, so it feels good. But because of broken insulin gauge, the effect soon wears off (2-3h) and leaves you desperate for another hit of energy which the carbs do most easily. Hence people don’t crave avocado or apples, but it is invariably simple trashy carbs.
Trick your body and start filling up on fats (do not illicit insulin response) or protein (to maintain and build your muscle mass), good amount of veg rich in fibre.
After a while you will stop experiencing the all-consuming starving feeling 2h after a meal as your body will be able to access own fat stores for energy, so will never feel that desperate need for food.
Your body is currently mainly using dietary sugar/carbs as fuel source, reprogramme it to run on fat (diet and own fat deposits). You will never feel desperately hungry again and your quality of life will be so much better. Weight loss will happen naturally and effortlessly.
Also favour weight/resistance exercise. It promotes muscle and bone regeneration, lowers insulin, increases your resting metabolic rate as muscles need energy while fat doesn’t.
Good luck, but whatever you do, don’t treat it as a ‘diet’ and a means to an end after which you can go back to your old ways. With the old ways will return the old problems.
This is a self-care and self-love thing. You are looking after yourself and always will care about your own well-being, not punishing yourself or restricting yourself.