Glad to have you here...[another newbie... LOL] The folks here have been great. You'll enjoy the experience.
Your lifestyle will dictate a lot of what you can do. If you don't have time to cook meals then "leftovers" are out of the question. As much as I love to cook I often find myself faced with the question of "What's for lunch?".
I do my fair share of Lean Quisene and Budget Gourmet micronukes. And whenever I can I bring leftovers. But your case is different.
One thing I do a lot is the "Chunky Soup" diet. One can of that is two meals. And it's reasonably healthy.
"If it's stupid, but it works, it isn't stupid."