i accept your condolences as it was grad school when i found my first great teacher and felt most magnetized by my subject.
i liked it in high school, supported by a very caring teacher i still revere, and still liked it in college inspired by great lecturers like john tate, but harvard was such an awful place in terms of personal relations and [lack of] concern for students, in spite of being a superb place for high quality lectures and research, that i faltered and almost lost my way.
then at brandeis i had maurice auslander as freshman algebra teacher, and he was so good i thought of becoming an algebraist. but he was so honest he realized i was not at heart an algebraist, and rejected me as a student, in favor of my real love geometry.
then i was lucky to be a student of allan mayer, in algebraic geometry, a brilliant and supportive teacher, but the politics of the 60's distracted me. eventually i returned to grad school, where i was helped first by hugo rossi, a powerful complex analyst, and then finally adopted by herb clemens, an amazingly gifted algebraic geometer, for whom i really could work.
after that, i benefited from the generosity of david mumford and heisuke hironaka, and phillip griffiths. ultimately my career was shaped by my partnership with the very gifted Robert Varley.
so a career has many high points. (I am 65 years old.)