I had the same anxiety at one point with my weight loss. I thought the less calories I ate the more I would lose. However, it doesn't work that way. You feel tired because your not eating enough calories. I then started eating between 1500 to 1600 a day and the weight finally started coming off. The less calories you eat the more your body is going to hold on to the weight. Eat more calories but the good kinds. Hope this helps.

I agree, I'm a panic dieter, I think eating less is going to help me lose faster. It's not less, it's what you eat. I'm eating a high protein low carb diet. I'm hitting the 1200 calorie goal MFP sets for me, and lost three lbs this week doing nothing more than a half hour run three times a week. Eat more, you're body will work better. Also, be careful what you're eating. I know I thought I was eating right until I learned the difference between a carb and a complex carb. Complex carbs make your body work harder to break it down so you burn more calories when you eat it. Brown rice, whole wheat anything... basically anything that's not white. White wheat (white bread, "normal" pasta etc) have been bleached, and stripped of anything in it that's beneficial to your body.

I highly recommend GNC total lean 25 shakes, 25 grams of protein + 8g of fiber keep me full for hours, gives me a great energy boost and they taste fantastic. I do two of those a day and a normal portioned lunch + a clif bar before a work out.

Best of luck!