What I want do I need?

So i started a 3 day fruit detox today. I'm only 4 hours into it and i'm already regretting doing this. All day I'm supposed to drink only a protein shake and a veggie salad for dinner. Then the next 2 days is only fruit every couple of hours.

I really want food and coffee! Like really bad i'm craving food but do I really need it?

My mind is telling me I need to eat but I think I'm honestly fine without it right now. The point is cleaning out my system and trying to be healthier.

Isn't it funny though, the minute you can't have something, all of a sudden you want it and it gets to a point where you believe you actually need it?