PhD thesis
I remember my PhD thesis.
In particular, I remember the years of work that went into it. I remember being grilled (with good, constructive intent) by my thesis committee a couple of times a year as I worked on it. I remember the many, many hours spend writing it. And, above all, I remember the hour-long seminar I had to give, followed by a couple of hours defending my thesis. The PhD thesis defense is usually the most stressful thing that PhD candidates go through on the path to earning their degree. Certainly it was for me.
Of course, the PhD thesis defense does contain a bit of an element…