Butterfly effect.

Of the epic coincidences that have happened recently, I can recall one: In the beginning of 11th grade, I was convinced that I would enroll in our Perm Polytechnic University, and that's probably what would have happened if someone hadn't posted a small, barely noticeable announcement on our school bulletin board about an open house at the physics department of our classical university. The appearance of such an announcement on the bulletin board of a humanities school is strange and unlikely in itself, but that's what happened. And somehow, a friend and I walked past this bulletin board and noticed this announcement. Neither of us was planning to enroll in the classical university, but we decided to go and check it out, just for fun. So, we got to the university, barely found the right building and the right classroom. And then the coincidences ended, and a pattern began. I learned a lot about the available programs, visited the laboratories, etc. In general, I realized that this place was actually very good, and most importantly, it was close to what I wanted. In essence, it was exactly what I wanted from higher education: something interesting and, at the same time, offering opportunities after graduation. I realized this, though, not immediately, but if it hadn't been for this visit, I might never have realized it. That's the story. It's not quite a chain of events, and perhaps not the most obvious demonstration of the butterfly effect, but still. Added 1 minute ago

Sometimes I do remember: "Ah... how good it was back then," but nothing more.

I think this is exactly what is called "living in the past," especially when it happens too often. But when special, fateful moments in life remain in your memory for a long time, can this be called "living in the past"?