I've fasted 5 days out of the last 7 (just had my first taste of food now), so I'll bite.
But ummm, the disclaimer here is that I am not really that vulnerable when it comes to the discomfort of hunger. I really love food, but I'm also really against drowning in negative emotions or self-torture. It was a long journey, I was that kid that cried when they couldn't get ice cream, you know? You just really want the ice cream so badly-- and that is what the causes the suffering. If you can just recognize that and let that go, you won't suffer. It's identical to hunger. Which is a discomfort, it's the opposite of wanting something. It's not-wanting something, but the formula is the exact same. You really really really just don't want this sensation. You don't want the fatigue of feeling like your body is demanding food. You don't want headaches. You don't want discomfort, dizziness, etc. All of that creates this "not-wanting" response. If you're able to just relax that, then everything is fine. Recognize it, if you're feeling it right now, it's there right? Identify it, see it, and just commit to stop fighting with it and see if anything changes a little.
Another way is knowing that even if you can't do the above, you can know for sure that feelings of hunger will pass on a biological/conceptual level. And that's because eventually your body will switch from telling you it needs food, to just giving up this whole signaling process, and instead taking from your fat stores. So maybe just the confidence that your discomfort will go away in time, is enough to relax that struggle for you.
