Sheena,
I'm never thirsty too, so getting in fluids has been very difficult. And, while I'm not physically hungry I do find myself wanting to eat. I've heard it called "head hunger." In these ways I also feel like I'm "failing." I guess I think I should have lost more weight by now (down 42 pounds). I'm trying to not be so hard on myself and just focus on being better every day. The one area where I am doing well is with exercise. Let's just try to keep up the good work!