I've read (and my GP confirmed) that there is research which shows carbohydrates cause an insulin spike - much like sugar does - and that we feel hungry as that spike drops away.

I also have the problem that fruit and vegetables don't make me feel full - I can eat vegetables all day, and will only stop because I'm bored! I also find that, by picking at fruit or vegetables (I'm fond of raw carrots) they just encourage me to snack which is a disaster for me because, when I'm bored of fruit and veg, I move on to crisps and chocolate! I can also eat loads of sweet food (although, less so since I lost a bit of weight - no idea why, but my sweet tooth seems to be lessening).

I've found eating a high protein, high fat breakfast (a traditional English breakfast of eggs and bacon is ideal) means I feel full all through the morning, don't snack before lunch and am then ready to eat at lunchtime, which then helps me to not snack in the afternoon. My evening meals are a bit more haphazard as I'm hungrier some days than others, depending on whether I've had any exercise, how cold it's been, etc. etc.

Personally, I think the big trick with weight loss is to find what works for you, and stick to it! I've made some minor changes to my diet (mainly around breakfast, as I've stopped eating cereal) and am losing weight slowly. But it took me six years to pile on 3st, so I'm happy to lose it slowly.

Not sure if any of that helps!

Reverse your will. As easy as it is for you to give up all hope you can change your mind and easily not. Yry something new. I'm no expert either but I'm 5'4 and was at 200lbs too. Now I'm at 194 for the last few weeks and I know it's because of ny lack of excercise, water intake and what I've been eating. Starting today, I changed my mind about giving up to doing something about it even if I have to start from scrtch as if I never lost before.One thing I've learned over the past few weeks is if I'm hungry I need to eat even if it is every 2 hrs. cause my body is saying that it needs more fuel, so instead of 3 big meals I added snacks in between to make it 5-6 small meals a day. Fruits & veggies are boring to me as well but I try to be creative with them; for example I put them in a smoothie; like spinach, cabbage, celery or any mild to the palate types of veggies in a blender (pref. a high powered one thats with in your budget like a ninja).
I also use MFP food diary and calculate my food before I eat it . This way I won't go too far (I'm a work in progress but when I do this I don't have the guilt). I try filling up with 2 cups of water (at least 8 oz) before I indulge. I Google food alternatives for things I like to eat that are healtheir ie. instead of Rold Gold pretzel try unsalted spelt pretzels and follow the serving size on the package, yogurt I get the plain and add stevia/truvia or agave, mix in my own fruit & add real vanilla beans. These are just a few ideas that I've tried. Also nuts and nut butters. And I plan to make my own granola so I can have parfaits. But water, water, water will set you free if you just drink enough of it. I hope any of this helps, at least in your choice not to quit.

Don't quit. Join the Eat More to Weigh Less group. It's changed my life.

Have you tried chia seeds? I have a spoonful every morning with breakfast (usually overnight oats - or porridge if i fancy it warm!) you can buy them in Holland & Barrett - they are full of omega 3, but they absorb upto 10 times their volume in water so swell in your stomach making you feel full. I always used to have a mid morning snack, but haven't needed it since I started eating these. Good luck - you CAN do this!