To tell the truth I was in the same situation, apart from the fact that my workload wasn’t excessive, and basically everyone was in the same situation; our student years are the only happy ones, when the future seems open, when everything seems possible, and after that adulthood and a career are only a slow and progressive process of ending up in a rut. That’s probably also why the friendships of our youth, the ones we make during our time as students and which are our only true friendships, never survive into adulthood: we avoid seeing them so as not to be confronted by witnesses to our crushed hopes, the evidence of our defeat.