Premake healthy snacks like overnight oats and fruit salads. Throw away all cookies, chips, soda, juices, and other high calorie and low nutrition foods and drinks. Eat more fiber and whole grains. This is hard for people but going vegetarian doubles weight loss if you replace it with direct substitutes like tofu and mushrooms. Round it all by adding beans or chick peas to your meals.

Having high fiber foods means you don't need to change your eating habits. The issue with advice in this thread is it ignores the struggle with eating habits. Not everyone can go to snacking addiction to "I just eat a banana before 5pm and nothing more", it's completely unrealistic and makes you feel worse about yourself and causes more binge snacking as a result.

Finally, look at small goals. Try to switch your foods to the first 2 things I mentioned. Switch to only water. Always drink a ton of water right before eating anything and your stomach will feel full. You will see weight loss of 5 kgs quickly if you go all in. Then target your body's feeling, the aches will go away slowly as you put better things into it. Then target further small kg losses, 5 kg at a time.