3 meals, less than 1000 calories

So, I'm content with a full belly.

Tonight's Dinner:
1 tilapia fillet with a light bread crumb/parmesan coating
1 small helping of rice-a-roni fried rice
1 large helping of carrots

Estimated calorie total ...... 500.

Bringing my daily total to ...... 945.

And - I'm not starving! Right now I'm actually REALLY full because I'm having a glass of water. But, I probably will have a snack tonight when I sit down with my husband and watch Lost later.

But -- keeping my calorie count at bay (definitely not aiming to be under 1000 or even under 1200 - as that can be unhealthy), how can I NOT lose weight?!