Dear Beth,
It is ok to "obsess" about food -- especially when one is starting a new plan.

If you cannot eat a bag of lettuce at one setting, you can eat salad three or four times a day.

Subway and the Talapia with asparagus sounds good.
Hubby would probably cook the Talapia with garlic. (He also adds either tumeric or cumin to lots of foods.)

I think I am going to heat up some rice and melt a little cheese over it in the microwave.

M.