Healthy eating for nurses?!

Yasmin
Im a nurse who spends 12 hours a day on her feet so lately my eating habits are whatever I can grab on the way home (not good choices) more often than not I am too tired to cook when I'm home. 
​Has anybody got any advice for how I can eat healthily whilst I work in the hospital.
​Recipes? Snack ideas? 
​Thanks :-)