dumb food

i'm only supposed to have 1100 - 1500 calories a day while dieting. i got to 1400 yesterday with just the bare essentials. which means i didn't pass out but felt like i was going to. no exaggeration here. i will actually pass out when my sugars go haywire. i really don't know what to cut from my diet. here is what i eat all day. breakfast: egg, toast, piece of meat, grape juice. if i don't eat exactly this my day is already wrecked. snack: yogurt and protein bar. Lunch: canned chicken w/ carrot and 1/2 tsp mayo in a tortilla. snack: yogurt or protein bar. dinner: whatever we are having in a small dose~ chicken and rice, tacos w/out cheese, blah blah. that's it. now where do i cut calories? and i do know this is a stupid blog but this is the subject at hand. sorry.