OP my advice would be to start with nutrition and mindfulness Take aways are nice as a treat but not great for long term healthy eating. Eating fresh nutritious food has positive effects on mood, weight, skin, hair and overall well being.
If you can afford it, as they are not cheap, try a meal delivery service like Mindful Chef. Maybe start with 3 meals a week and see how you go? If you order a 2 person portion size, you would have some leftovers. Everything you need to make a delicious meal out of fresh ingredients is included and the meals themselves are quick to prepare. You get a recipe book with each delivery. You can see what kind of meals are available by going on their website and see if it's the kind of thing that might appeal to you.
If it doesn't appeal, maybe try the "icook" range of ready meals available in supermarkets. They are very tasty and good quality and if you just grab a bag of pre prepared veg or salad to go with it, it won't be any effort to prepare.
Once cooking a meal becomes less of a chore and more something you can do without too much effort, you can maybe then move on to cooking from scratch (or not!) But keep the takeaways to a minimum.
Try to also be very aware of how you feel after eating certain foods: note what makes you feel bloated, sluggish or just icky versus foods that make you feel sated and give you energy. Try and use that to avoid buying and eating food that doesn't make you feel good. Don't think about losing weight just yet, concentrate on how you feel after eating.
I would also try a mindfulness app like Simple Habit or similar. It will take 5 mins a day to help you relax and focus and will, with practice, allow you to open up to more of the changes you want to make in your life.
I agree with PP, not to try and do too much all at once. As you introduce changes they will gradually become part of your daily routine and won't feel like such a mountain to climb.
Best of luck and just take one day at a time.