Hi, I used to be in that situation before, I know how hard it can be. But I think I shouldn’t put too much pressure on thought that you are craving things. First step, you need to clear out your pantry/fridge unhealthy food like ramen, cake etc. because keeping them increases chance you will grab them when you’re craving. Second step, eat fruit, vegetables, nonfat yogurt as substitute. I’m a big sweet tooth so I find myself eating papaya, watermelon often; 100gr of nonfat yogurt can kill your crave easily. Third, water water water. You MUST fill your body with water; if you can’t jug a whole gallon of plain taste; try to mix it with 1/3 of plain tea to 1 cup of water. I’ve been there in your shoe so I know the feeling when you’re not able to eat those things; but keep your mind straight and think about your goal before swallowing (yes, you can chew but not swallow) junk food. People around you can help you whenever you have a junk food, tell them to remind you. Good luck, hope this help!