Preparation is important for tasks at hand: tests, events, finances and your fitness. This isn't a monumental event, this is your daily life.
This week, look at the challenges you are going to face. What days are going to be tough to train due to your schedule? Are there moments where nutrition is going to be a challenge? Maybe you have a meeting over lunch you need to mentally prep for to keep things in check.
Regardless of the situation you need to plan accordingly for success.