Student life is bittersweet. If it is more bitter than sweet - you're doing something wrong.
Student life marks the finishing stages of adolescence. The quest for self-identity spikes and starts to calm down as one begins to understand some of the workings of society. The greatest underlying factor of student stress is how well the student has found and created him/herself, and how well this new confident identity can overcome the difficulties of life.
Freedom comes with responsibility - students who are prepared to embrace this do well. Tension does not become stress if one is able to grow internally and meet the challenge.
Stress from study, learning and social pathfinding are all just add-ons to this underlying inner change. In this sense, student stress is not overcome, but overgrown instead.
Even if you cease to be a student - never stop learning!