Do you find low calorie diets to be difficult?

I drink coffee when I'm hungry cause 100% of the time, it gets rid of my hunger and if I don't have coffee with lemon juice mixed in to eliminate hunger, I will have cheese which also helps a little bit.

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I'm not anorexic or anything close to it - I get hungry if my calorie intake is 40% lower than normal.
Do you find low calorie diets to be difficult?
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