Mal is right about the sodium. I was thinking the same thing when I read that. I would limit your frozen dinners to one per day at the most. Also, I would treat yourself to that meal--it might help wake up your metalbolism.
Here's a healthy idea for cooking that isn't that hard to do. Get a bunch of veggies that you like (broccoli, cauliflower, bell peppers, mushrooms, onions, zucchini, summer squash etc---as many as you want) chop them up, throw them in a frying pan with a tbsp of olive oil, throw in some spices--whatever you like, and take some skinless boneless chicken breasts and toss those in as well. Cook on med heat until chicken is done (i usually throw in chicken first if it's frozen). Also, if you like cilantro, buy some fresh, chop it up and toss in--adds great flavor. This is very low-cal/carb, tastes good, and if you make a big batch of it, you can eat it for several meals. Oh, and if you like it spicy, buy some Indian or Thai curry paste and add that. I love it. You can eat this dish until you're full and not feel guilty b/c it's so low-cal--and extremely nutritious.
Hope you found that helpful!