It's finals week and Hunter Pollack is missing his biggest ally: his sister.

High-school and college students know how stressful finals week can be, especially if you're cramming for tests that can have a lasting impact on your academic careers.

A few years ago, whenever Hunter found himself in these situations, he could always count on his sister, Meadow. Her encouragement, often in the form of inspirational text messages, helped him get through times of self-doubt and overwhelming stress.