If I was an inanimate heat engine, you would have me dead to rights. But I'm not, I'm a living creature with free will (or a good approximation thereof). If I start feeling hungry, I'm going to want to eat, and it's not much use telling me that I shouldn't, if my body is crying out for more food I'll listen to it more than you (whereby "I" I mean an average person - it just so happens that personally I'm capable of resisting the urge, but I know I'm in the minority on this one).
When you eat carbohydrates, your body produces insulin, which encourages your body to suck the glycogen out of circulation, and store it in triglycerides. Congratulations, you just got fatter, and worse still, because all of that glycogen has just been stored away, you're feeling hungry again.
That means that if you can find foods that help keep your body from sending the "hungry" signal (by e.g not triggering the insulin-response), then you will naturally eat less.
>If I start feeling hungry, I'm going to want to eat, and it's not much use telling me that I shouldn't
So you admit that eating less calories is a valid way to lose weight, but that it takes willpower to stick to the diet? Use that free will of yours to eat less calories, and not less yourself become an inanimate eating machine. Sounds like you're letting your body control you, not the other way around.
When you eat carbohydrates, your body produces insulin, which encourages your body to suck the glycogen out of circulation, and store it in triglycerides. Congratulations, you just got fatter, and worse still, because all of that glycogen has just been stored away, you're feeling hungry again.
That means that if you can find foods that help keep your body from sending the "hungry" signal (by e.g not triggering the insulin-response), then you will naturally eat less.