Although you might struggle to fit exercise in around your busy day, it is important that you fit time in for a workout nof some kind, regardless of all of the other commitments you have.
Your mental and physical health should be your number one priority. So you should make sure that you take frequent time off and not only when you need it.
Even if you do not eat a diet high in specifically stress-relieving food, eating healthily can help you to concentrate, can give you energy, and can stabilize your mood.