It can be one of those days when you were late for a class then you took a seat next to someone whom you talked to during the lesson and turned out this person is now your bff.
Or when you went to a wedding party of an old friend and you met a person who now becomes your biggest investor.
It is the day when you wake up in the morning and you don't really expect anything big is going to start that day. So you do your daily things as usual. Even until you go to bed at night you still don't know that it has been started. The big thing has already been started.
Only a few months or even years later when you look back at that particular day then you realize how important every single decision you took on that day is.
I have some of them. One of those days is when I put silly word as my YM status. When I decided that the week had gone too boring and I needed to watch a movie. When I insisted to keep my promise to meet you even tough I didn't know how to reach the place.
So, you know, I think, sometimes big things in our lives come when we least expect them. They just happen.