What is your biggest obstacle when dieting and trying to lose weight?

Can you answer Jessica B’s question about Weight Loss?:

I was just curious what everyone else struggles with when trying to diet. Mine is just hunger, I have a hearty appetite and loathe the feeling of being hungry so its hard to say no to tasty, greasy foods that are available when I’m dieting. Whats your obstacle? And have you overcome it or are you still battling?

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