first of all, get your vitamins and iron from supplements.
a daily multivitamin would be perfect.
as i college student who works full-time, i used to struggle with just having the time to cook.
but i live off campus.
my go-to meals are salads and stir frys.
i use a lot of tofu.
or i make meal replacement smoothies with a lot of fruits and vegetables.
stock up on healthy snacks.
i like granola, trial mix, yogurt, or fiber bars.
also, just because you're eating out or somewhere else doesn't mean you can't make healthier choices.
for example, subway.
if you load up your sandwich with veggies, eat whole grains, and skip the mayo you'll be fine.
working out is key, regardless if you want to be in shape or not.
if i can take 16 credits and work 40+ hours a week and still have time to go for a run every day, so can you.