Dear Prudence,
I recently finished my Ph.D., and the time has come to move onward to the next phase of my life. I want to become a university professor, so I’ll have to complete one or two post-doctoral fellowships. The situation at this point is promising, provided I keep up my current record of research and teaching. My girlfriend of five years, however, anchors me to one city. Alone, I could potentially go anywhere and work on the cutting edge of my field. With her, I’m stuck with a serviceable career. Her own ambitious career path likely prevents her from following me, and we’ve already been through several years of being long-distance. I feel like it might be a good time to cut things off, but I am having trouble justifying breaking up. I still love her, and it seems a cruel thing to do to for such practical reasons. But I also feel as if I should be focusing on my work and follow wherever it leads. What should I do?