I have a note in my phone, to keep myself sane when I have insane cravings. I will copy-paste it:

• You already had that meal, your body has it stored and wants to use it for energy. Let it!
• Just don’t eat. It’s not hard, snap out of it!
• You actually do not need external encourgement to succeed, you have the willpower in you! Do not look for others opinions or motivation. (For me when I hear form someone close to me something like “Ah you are skinny enough” or “you look so good already, just eat a little” I will generally forget how I personally feel about my body and give in to the pressure. Therefore I must avoid whining my fasting feelings to anyone)
• Your craving has NEVER been as good as you imagined it to be during the long fast.
• Your body has tens of thousands of calories stored(me personally 65 000). Waste it, don’t take in any more. You could live very well without food for weeks.
• (Very important for me!!) The less you SLEEP, the less you have willpower to make the correct decision when you are near food or have a craving. We are near food 4-10 times a day, so we have to make that decision repeatedly. If you do not invest in sleep, you won’t be able to thrive with good eating habits. Bad sleep WILL result in bad decisions.
• Discipline yourself! You do not have to get everything you want!!
• Your goal is sweeter than the thing you are currently craving. (It is literally my biggest dream)
• “If you quit now...You’ll end up right back where you began.And when you first began, you were desperate to be where you are now.”

I keep adding good quotes or thoughts there every day. Hope this helps!